OSX Yosemite protression bar stuck at 50%

Hey everyone, I have some issues with osx yosemite. Safari was no longer loading the sites so I decided to restart my macbook pro 13 mid 2011. I managed to log in on the first screen but now the progression bar stucks at about 50%. I tried to reboot, went to disk utilities etc... But it still stucks at 50%.
And when I tried to start my mac from the disk utility, it says that my password is not correct (i did not change it)
I hope someone has a solution for this
thx

Startup Issues - Resolve
Startup Issues - Resolve (2)
Startup Issues - Resolve (3)

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After IOS 8 upgrade on phone, documents no longer synch in Pages. I find out subsequently that when I upgraded it gave me iCloud Drive, which won't synch unless my computer has OSX Yosemite, which isn't available. Apple says they can't get me back.

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That happened to me. I rebooted and now my docs are back again.

OSX Yosemite Wi-Fi: no hardware installed

Hi ASC:
I installed Yosemite about 2 weeks ago, and at first my wi-fi (at home & work) was working fine, but then about a week ago the Wi-Fi icon at the top of the toolbar got an "X" in the middle of it and when I click on the Wi-Fi icon it says, "No hardware installed". I tried resetting the SMC on portables with a battery you should not remove on your own (from another thread) but no luck. I've googled this, YouTube-ed it, but still no Wi-Fi back. Someone PLEASE help
I'm using:
OSX Yosemite
10.10.1
MacBook Pro (15-inch, early 2011)
Thank you.

In some cases, this issue is caused by a hardware fault. A loose connection, a short circuit, or a microscopic break in a solder joint may open and close depending on temperature, making the failure intermittent.
Test after taking each of the following steps that you haven't already taken. Back up all data before making any changes.
1. If you can connect to the Internet via Ethernet, Bluetooth, or a USB network device, make sure all available OS X updates are installed. If Wi-Fi is your only means of network access, skip this step.
2.. There are a few reports that the problem was solved by unchecking the box marked
Wake for Wi-Fi network access
in the Power Adapter tab of the Energy Saver preference pane. I can't confirm.
3. Reset the NVRAM.
4. Reset the System Management Controller.
5. Start up in Recovery mode. In the menu bar of the OS X Utilities screen, there's a Wi-Fi menu. Try to connect. If it works, select Install OS X. If your Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade, so make a note of those before you begin.
6. Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.

MacBook Pro shuts down halfway to update OSX Yosemite

I updated my Macbook Pro to OSX Yosemite, and since I restarted it, it won't work....The Apple logo comes on with the loading bar, but loading gets at halfway and then 5minutes later the computer shuts off...Anybody can help please.

I would start by booting into the Recovery Partition, on start up hold the ⌘ and R keys till you see the small window containing the four options. I think Disk Utility is the last option in the list. Use it to repair Permissions and then repair the hard drive.
Your signature says you are using Yosemite? Are you still able to boot into Mavericks or have you successfully installed Yosemite?
Remember, you should never do anything system intensive while using battery power, even if it's a full charge. Always use your AC power.

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I am using a MacBook Pro running OSX Yosemite version 10.10.1.
On previous versions I was able to connect my PS3 controller (DualShock 3) to my MacBook via bluetooth. However, the bluetooth menu has changed and I can no longer figure out how to get it to connect. I've been googling my issue for about a week but all I can find are tutorials on the older OS, nothing that will show me how to connect it with the current Yosemite OS. I've been messing with my bluetooth menu trying to figure out what to do but I'm stumped.
Any help?

I stand corrected. Wireless does work. For connecting, you do it like the original tutorials tell you (reset the controller with a pin, connect via USB, hold PS button for three seconds, then disconnect).
Only minor difference is that no lights will indicate that it may be connected. In that case, check your Bluetooth Menu via the menu bar (not from a separate Bluetooth Menu window mind you) and see if it connects.
This is more trial and error so I can't guarantee success but worked for me and a few games I played.

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I am using osx yosemite,Do i need antivirus in my pc?

i am using osx yosemite,Do i need antivirus in my pc?

Mac users often ask whether they should install "anti-virus" software. The answer usually given on ASC is "no." The answer is right, but it may give the wrong impression that there is no threat from what are loosely called "viruses." There is a threat, and you need to educate yourself about it.
1. This is a comment on what you should—and should not—do to protect yourself from malicious software ("malware") that circulates on the Internet and gets onto a computer as an unintended consequence of the user's actions. It does not apply to software, such as keystroke loggers, that may be installed deliberately by an intruder who has hands-on access to the computer, or who has been able to take control of it remotely. That threat is in a different category, and there's no easy way to defend against it.
The comment is long because the issue is complex. The key points are in sections 5, 6, and 10.
OS X now implements three layers of built-in protection specifically against malware, not counting runtime protections such as execute disable, sandboxing, system library randomization, and address space layout randomization that may also guard against other kinds of exploits.
2. All versions of OS X since 10.6.7 have been able to detect known Mac malware in downloaded files, and to block insecure web plugins. This feature is transparent to the user. Internally Apple calls it "XProtect."
The malware recognition database used by XProtect is automatically updated; however, you shouldn't rely on it, because the attackers are always at least a day ahead of the defenders.
The following caveats apply to XProtect:
☞ It can be bypassed by some third-party networking software, such as BitTorrent clients and Java applets.
☞ It only applies to software downloaded from the network. Software installed from a CD or other media is not checked.
As new versions of OS X are released, it's not clear whether Apple will indefinitely continue to maintain the XProtect database of older versions such as 10.6. The security of obsolete system versions may eventually be degraded. Security updates to the code of obsolete systems will stop being released at some point, and that may leave them open to other kinds of attack besides malware.
3. Starting with OS X 10.7.5, there has been a second layer of built-in malware protection, designated "Gatekeeper" by Apple. By default, applications and Installer packages downloaded from the network will only run if they're digitally signed by a developer with a certificate issued by Apple. Software certified in this way hasn't necessarily been tested by Apple, but you can be reasonably sure that it hasn't been modified by anyone other than the developer. His identity is known to Apple, so he could be held legally responsible if he distributed malware. That may not mean much if the developer lives in a country with a weak legal system (see below.)
Gatekeeper doesn't depend on a database of known malware. It has, however, the same limitations as XProtect, and in addition the following:
☞ It can easily be disabled or overridden by the user.
☞ A malware attacker could get control of a code-signing certificate under false pretenses, or could simply ignore the consequences of distributing codesigned malware.
☞ An App Store developer could find a way to bypass Apple's oversight, or the oversight could fail due to human error.
Apple has so far failed to revoke the codesigning certificates of some known abusers, thereby diluting the value of Gatekeeper and the Developer ID program. These failures don't involve App Store products, however.
For the reasons given, App Store products, and—to a lesser extent—other applications recognized by Gatekeeper as signed, are safer than others, but they can't be considered absolutely safe. "Sandboxed" applications may prompt for access to private data, such as your contacts, or for access to the network. Think before granting that access. Sandbox security is based on user input. Never click through any request for authorization without thinking.
4. Starting with OS X 10.8.3, a third layer of protection has been added: a "Malware Removal Tool" (MRT). MRT runs automatically in the background when you update the OS. It checks for, and removes, malware that may have evaded the other protections via a Java exploit (see below.) MRT also runs when you install or update the Apple-supplied Java runtime (but not the Oracle runtime.) Like XProtect, MRT is effective against known threats, but not against unknown ones. It notifies you if it finds malware, but otherwise there's no user interface to MRT.
5. The built-in security features of OS X reduce the risk of malware attack, but they are not, and never will be, complete protection. Malware is a problem of human behavior, not machine behavior, and no technological fix alone is going to solve it. Trusting software to protect you will only make you more vulnerable.
The best defense is always going to be your own intelligence. With the possible exception of Java exploits, all known malware circulating on the Internet that affects a fully-updated installation of OS X 10.6 or later takes the form of so-called "Trojan horses," which can only have an effect if the victim is duped into running them. The threat therefore amounts to a battle of wits between you and Internet criminals. If you're better informed than they think you are, you'll win. That means, in practice, that you always stay within a safe harbor of computing practices. How do you know when you're leaving the safe harbor? Below are some warning signs of danger.
Software from an untrustworthy source
☞ Software with a corporate brand, such as Adobe Flash Player, doesn't come directly from the developer’s website. Do not trust an alert from any website to update Flash, or your browser, or any other software. A genuine alert that Flash is outdated and blocked is shown on this support page. Follow the instructions on the support page in that case. Otherwise, assume that the alert is fake and someone is trying to scam you into installing malware. If you see such alerts on more than one website, ask for instructions.
☞ Software of any kind is distributed via BitTorrent, or Usenet, or on a website that also distributes pirated music or movies.
☞ Rogue websites such as Softonic, Soft32, and CNET Download distribute free applications that have been packaged in a superfluous "installer."
☞ The software is advertised by means of spam or intrusive web ads. Any ad, on any site, that includes a direct link to a download should be ignored.
Software that is plainly illegal or does something illegal
☞ High-priced commercial software such as Photoshop is "cracked" or "free."
☞ An application helps you to infringe copyright, for instance by circumventing the copy protection on commercial software, or saving streamed media for reuse without permission. All "YouTube downloaders" are in this category, though not all are necessarily malicious.
Conditional or unsolicited offers from strangers
☞ A telephone caller or a web page tells you that you have a “virus” and offers to help you remove it. (Some reputable websites did legitimately warn visitors who were infected with the "DNSChanger" malware. That exception to this rule no longer applies.)
☞ A web site offers free content such as video or music, but to use it you must install a “codec,” “plug-in,” "player," "downloader," "extractor," or “certificate” that comes from that same site, or an unknown one.
☞ You win a prize in a contest you never entered.
☞ Someone on a message board such as this one is eager to help you, but only if you download an application of his choosing.
☞ A "FREE WI-FI !!!" network advertises itself in a public place such as an airport, but is not provided by the management.
☞ Anything online that you would expect to pay for is "free."
Unexpected events
☞ A file is downloaded automatically when you visit a web page, with no other action on your part. Delete any such file without opening it.
☞ You open what you think is a document and get an alert that it's "an application downloaded from the Internet." Click Cancel and delete the file. Even if you don't get the alert, you should still delete any file that isn't what you expected it to be.
☞ An application does something you don't expect, such as asking for permission to access your contacts, your location, or the Internet for no obvious reason.
☞ Software is attached to email that you didn't request, even if it comes (or seems to come) from someone you trust.
I don't say that leaving the safe harbor just once will necessarily result in disaster, but making a habit of it will weaken your defenses against malware attack. Any of the above scenarios should, at the very least, make you uncomfortable.
6. Java on the Web (not to be confused with JavaScript, to which it's not related, despite the similarity of the names) is a weak point in the security of any system. Java is, among other things, a platform for running complex applications in a web page, on the client. That was always a bad idea, and Java's developers have proven themselves incapable of implementing it without also creating a portal for malware to enter. Past Java exploits are the closest thing there has ever been to a Windows-style virus affecting OS X. Merely loading a page with malicious Java content could be harmful.
Fortunately, client-side Java on the Web is obsolete and mostly extinct. Only a few outmoded sites still use it. Try to hasten the process of extinction by avoiding those sites, if you have a choice. Forget about playing games or other non-essential uses of Java.
Java is not included in OS X 10.7 and later. Discrete Java installers are distributed by Apple and by Oracle (the developer of Java.) Don't use either one unless you need it. Most people don't. If Java is installed, disable it—not JavaScript—in your browsers.
Regardless of version, experience has shown that Java on the Web can't be trusted. If you must use a Java applet for a task on a specific site, enable Java only for that site in Safari. Never enable Java for a public website that carries third-party advertising. Use it only on well-known, login-protected, secure websites without ads. In Safari 6 or later, you'll see a padlock icon in the address bar when visiting a secure site.
Stay within the safe harbor, and you’ll be as safe from malware as you can practically be. The rest of this comment concerns what you should not do to protect yourself.
7. Never install any commercial "anti-virus" (AV) or "Internet security" products for the Mac, as they are all worse than useless. If you need to be able to detect Windows malware in your files, use one of the free security apps in the Mac App Store—nothing else.
Why shouldn't you use commercial AV products?
☞ To recognize malware, the software depends on a database of known threats, which is always at least a day out of date. This technique is a proven failure, as a major AV software vendor has admitted. Most attacks are "zero-day"—that is, previously unknown. Recognition-based AV does not defend against such attacks, and the enterprise IT industry is coming to the realization that traditional AV software is worthless.
☞ Its design is predicated on the nonexistent threat that malware may be injected at any time, anywhere in the file system. Malware is downloaded from the network; it doesn't materialize from nowhere. In order to meet that nonexistent threat, commercial AV software modifies or duplicates low-level functions of the operating system, which is a waste of resources and a common cause of instability, bugs, and poor performance.
☞ By modifying the operating system, the software may also create weaknesses that could be exploited by malware attackers.
☞ Most importantly, a false sense of security is dangerous.
8. An AV product from the App Store, such as "ClamXav," has the same drawback as the commercial suites of being always out of date, but it does not inject low-level code into the operating system. That doesn't mean it's entirely harmless. It may report email messages that have "phishing" links in the body, or Windows malware in attachments, as infected files, and offer to delete or move them. Doing so will corrupt the Mail database. The messages should be deleted from within the Mail application.
An AV app is not needed, and cannot be relied upon, for protection against OS X malware. It's useful, if at all, only for detecting Windows malware, and even for that use it's not really effective, because new Windows malware is emerging much faster than OS X malware.
Windows malware can't harm you directly (unless, of course, you use Windows.) Just don't pass it on to anyone else. A malicious attachment in email is usually easy to recognize by the name alone. An actual example:
London Terror Moovie.avi [124 spaces] Checked By Norton Antivirus.exe
You don't need software to tell you that's a Windows trojan. Software may be able to tell you which trojan it is, but who cares? In practice, there's no reason to use recognition software unless an organizational policy requires it. Windows malware is so widespread that you should assume it's in every email attachment until proven otherwise. Nevertheless, ClamXav or a similar product from the App Store may serve a purpose if it satisfies an ill-informed network administrator who says you must run some kind of AV application. It's free and it won't handicap the system.
The ClamXav developer won't try to "upsell" you to a paid version of the product. Other developers may do that. Don't be upsold. For one thing, you should not pay to protect Windows users from the consequences of their choice of computing platform. For another, a paid upgrade from a free app will probably have all the disadvantages mentioned in section 7.
9. It seems to be a common belief that the built-in Application Firewall acts as a barrier to infection, or prevents malware from functioning. It does neither. It blocks inbound connections to certain network services you're running, such as file sharing. It's disabled by default and you should leave it that way if you're behind a router on a private home or office network. Activate it only when you're on an untrusted network, for instance a public Wi-Fi hotspot, where you don't want to provide services. Disable any services you don't use in the Sharing preference pane. All are disabled by default.
10. As a Mac user, you don't have to live in fear that your computer may be infected every time you install software, read email, or visit a web page. But neither can you assume that you will always be safe from exploitation, no matter what you do. Navigating the Internet is like walking the streets of a big city. It can be as safe or as dangerous as you choose to make it. The greatest harm done by security software is precisely its selling point: it makes people feel safe. They may then feel safe enough to take risks from which the software doesn't protect them. Nothing can lessen the need for safe computing practices.

Apps are not loading in creative cloud manager to install on mac osx yosemite

I am trying to download apps from the creative cloud manager. No apps are appearing i just get a blue spinning wheel. They are updating fine on my laptop which both are updated with osx yosemite.

I'm also experiencing the same. I started to download Creative Cloud today, and am stuck with the spinning wheel when I go to download the apps.

OSX Yosemite driver for Canon LBP3000

OSX Yosemite driver for Canon LBP3000 needed. When will one be available?

Hi smukhi!
I will be glad to assist you. The driver is now available for the commercial release of the OS X 10.10 (Yosemite) driver. I recommend uninstalling the previous driver before installing the latest driver. To uninstall the driver, please follow the instructions below:
1. Click the [Printers & Scanners] icon in [System Preferences].
2.Select the printer you use on [Printers], then click [-].
3. Delete the printers that are registered, then close the [Print & Scan] dialog box.
4. Open Finder application of your Mac OS X.
5. Select [Go] → [Go to Folder] from the menu bar.
6. Enter the following folder locations, click [Go], then delete the files and folders.
Delete Example: You can delete files and folders by dragging them to the [Trash] icon in the Dock.
Location
Files and folders to delete
/Library/Printers/Canon/
CUPSCAPT
/Library/LaunchAgents/
jp.co.canon.CUPSCAPT.BG.plist
/Library/Printers/PPDs/
Contents/Resources/
Delete all the following files in the folders.
CNMCxxxAUS.ppd.gz
(xxx is a model name starting with [LBP].)
When the [Authenticate] dialog box is displayed
Enter the administrator's name and password, and then click [OK].
7. Close all open windows.
8. Restart your computer and empty the Trash Bin.
The printer driver is uninstalled.
Next, go to the imageCLASS LBP6000 - Drivers & Software page, and then download the file CAPT Printer Driver Ver.3.67 for Mac OS X 10.5/10.6/10.7/... listed under the [Recommended for You] section.
After installing the printer, please follow the instructions below to add the printer:
1. Click the [Printers & Scanners] icon in [System Preferences].
2. Click [+].
3. Click [Default], and then select the printer to be used from the printer list.
4. Select [Select Printer Software] from [Print Using].
5. Select the printer to be used from [Printer Software], and then click [OK].
6. Click [Add].
7. Make sure that the printer to be used is displayed, and then close the [Print & Scan] dialog box.
The printer registration is now completed.
I hope this information is helpful to you. Should you need further assistance, please contact us at 1-800-OK-CANON (1-800-652-2666).
Did this answer your question? Please click the Accept as Solution button so that others may find the answer as well.

SyncServer on OSX Yosemite is running too hard.

SyncServer on OSX Yosemite (10.10.3 14D136) is running wild. It is draining my battery and sapping my resources. It has been like this for a couple weeks now. Reboots and closing unused programs has no effect. Anyone?

Back up all data before proceeding.
Triple-click anywhere in the line below on this page to select it:
~/Library/Application Support/SyncServices
Right-click or control-click the line and select
Services ▹ Reveal in Finder (or just Reveal)
from the contextual menu.* A folder should open with an item selected. Quit the application if it's running. Move the selected item to the Trash. Relaunch the application and test.
*If you don't see the contextual menu item, copy the selected text to the Clipboard by pressing the key combination command-C. In the Finder, select
Go ▹ Go to Folder...
from the menu bar and paste into the box that opens by pressing command-V. You won't see what you pasted because a line break is included. Press return.

Facetime on iMac crashing after updating to OSX Yosemite

I'm unable to open face time after installing OSX Yosemite. I keep getting "Face Time quit unexpectedly" message along with this
Path:                  /Applications/FaceTime.app/Contents/MacOS/FaceTime
Identifier:            com.apple.FaceTime
Version:               3.0 (2142)
Build Info:            FaceTime-2142000000000000~6
Code Type:             X86-64 (Native)
Parent Process:        ??? [1]
Responsible:           FaceTime [616]
User ID:               501
Date/Time:             2014-10-24 23:07:48.618 -0700
OS Version:            Mac OS X 10.10 (14A389)
Report Version:        11
Anonymous UUID:        3DD7D1CA-487B-A126-D901-006E11EEBFEC
Time Awake Since Boot: 1200 seconds
Crashed Thread:        0 Dispatch queue: SharedAddressBook
Exception Type:        EXC_CRASH (SIGABRT)
Exception Codes:       0x0000000000000000, 0x0000000000000000
Application Specific Information:
*** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<__NSDictionaryM 0x60000024c960> valueForUndefinedKey:]: this class is not key value coding-compliant for the key icloud.com.'
terminating with uncaught exception of type NSException
abort() called
Application Specific Backtrace 1:
0   CoreFoundation                      0x00007fff8690a64c __exceptionPreprocess + 172
1   libobjc.A.dylib                     0x00007fff890a36de objc_exception_throw + 43
2   CoreFoundation                      0x00007fff8690a1e9 -[NSException raise] + 9
3   Foundation                          0x00007fff8de9a5ed -[NSObject(NSKeyValueCoding) valueForUndefinedKey:] + 226
4   Foundation                          0x00007fff8ddb7e68 -[NSObject(NSKeyValueCoding) valueForKey:] + 385
5   Foundation                          0x00007fff8ddd227e -[NSDictionary(NSKeyValueCoding) valueForKey:] + 143
6   CallHistory                         0x00000001073edb9d __59-[CHSharedAddressBook fetchAddressBookInfoFromCacheForKey:]_block_invoke + 62
7   libdispatch.dylib                   0x00007fff877a9c13 _dispatch_client_callout + 8
8   libdispatch.dylib                   0x00007fff877aae5e _dispatch_barrier_sync_f_invoke + 57
9   CallHistory                         0x00000001073d6608 -[CHSynchronizable executeSync:] + 67
10 CallHistory                         0x00000001073edab9 -[CHSharedAddressBook fetchAddressBookInfoFromCacheForKey:] + 189
11 CallHistory                         0x00000001073e9bf4 -[CHRecentCall fetchAndSetAddressBookIdsSync] + 141
12 CallHistory                         0x00000001073ea07a -[CHRecentCall addressBookRecordIdSync] + 42
13 CallHistory                         0x00000001073e8d1c __30-[CHRecentCall coalescingHash]_block_invoke + 61
14 libdispatch.dylib                   0x00007fff877a9c13 _dispatch_client_callout + 8
15 libdispatch.dylib                   0x00007fff877aae5e _dispatch_barrier_sync_f_invoke + 57
16 CallHistory                         0x00000001073d6608 -[CHSynchronizable executeSync:] + 67
17 CallHistory                         0x00000001073e8c4e -[CHRecentCall coalescingHash] + 178
18 CallHistory                         0x00000001073dafe3 -[CHManager coalesceCalls:] + 654
19 CallHistory                         0x00000001073dbc33 -[CHManager fetchRecentCallsSyncWithCoalescing:] + 798
20 CallHistory                         0x00000001073d67af __42-[CHSynchronizable executeSyncWithResult:]_block_invoke + 16
21 libdispatch.dylib                   0x00007fff877a9c13 _dispatch_client_callout + 8
22 libdispatch.dylib                   0x00007fff877b35f7 _dispatch_barrier_sync_f_slow + 757
23 CallHistory                         0x00000001073d66f5 -[CHSynchronizable executeSyncWithResult:] + 208
24 CallHistory                         0x00000001073db213 -[CHManager recentCalls] + 86
25 FaceTime                            0x000000010721e024 FaceTime + 102436
26 FaceTime                            0x000000010721defa FaceTime + 102138
27 FaceTime                            0x000000010721dc64 FaceTime + 101476
28 FaceTime                            0x0000000107223edf FaceTime + 126687
29 AppKit                              0x00007fff843aa0d9 -[NSIBObjectData nibInstantiateWithOwner:options:topLevelObjects:] + 1276

Please test after taking each of the following steps. Back up all data before you begin.
Step 1
Quit the Contacts or Address Book application if it's running.
Triple-click anywhere in the line of text below on this page to select it:
~/Library/Caches/com.apple.AddressBookSourceSync
Right-click or control-click the highlighted line and select
          Services ▹ Reveal in Finder (or just Reveal)
from the contextual menu.* A folder should open with an item selected. Move the selected item to the Trash.
Repeat with this line:
~/Library/Containers/com.apple.AddressBook
*If you don't see the contextual menu item, copy the selected text to the Clipboard by pressing the key combination command-C. In the Finder, select
          Go ▹ Go to Folder...
from the menu bar and paste into the box that opens (command-V). You won't see what you pasted because a line break is included. Press return.
Step 2
If you use iCloud, uncheck the box marked Contacts in the iCloud preference pane. Press return to confirm, or click Keep on Mac in the dialog that opens.
If you synchronize contacts with any other network service, disable that synchronization in the Internet Accounts preference pane.
Step 3
From the list of groups on the left side of the Contacts window, select All On My Mac. If that group doesn't exist or is empty, skip this step. Otherwise, from the menu bar, select
          File ▹ Export... ▹ Contacts Archive...
Save the exported archive to the Desktop.
Step 4
Quit Contacts. Reveal the following item in the Finder as you did in Step 1:
~/Library/Application Support/AddressBook
If you know when the problem started, and you can restore that folder from an earlier backup without losing any contacts, do so and test. Otherwise, move the folder to the Desktop, leaving the window open for now.
Step 5
Launch Contacts. Your contacts and groups will be gone. If you took Step 3, then double-click the file you created in that step and confirm that you want to import from it. Your contacts and groups will reappear.
Step 6
If you took Step 2, reverse it. Test. If the issue is resolved, delete the AddressBook folder and the archive file on the Desktop and close the open folder window.
Otherwise, quit Contacts again and put the AddressBook folder back where it was, overwriting the newer one that will have been created in its place.
Step 7
Go back to Step 3, but this time choose Export vCard... from the Export menu. Continue as in Steps 4-6. All contacts should be preserved, but you may lose some metadata such as group membership.

OSX Yosemite installation problems :-(

Have downloaded OSX Yosemite and have tried to install at least 10 times and continue to get the message "An error occurred when preparing to install. Try running the application again" What do I need to do to complete this install? Tried to find a more applicable community but could not post there :-(

1. If possible, set the system clock as instructed here. If you can only start up in Recovery mode, see below.
Select Get Help Online. Safari will launch. While in Recovery, you'll have no access to your bookmarks, but you won't need them. Load this web page.
Triple-click anywhere in the line below to select it:
date 0801000014
Copy the selected text to the Clipboard by pressing the key combination command-C.
Quit Safari. You'll be returned to the OS X Utilities screen.
Select
Utilities ▹ Terminal
from the menu bar. A Terminal window will open. Paste into the window by pressing the key combination command-V.
Wait for a new line ending in a dollar sign ($) to appear below what you entered. If it doesn't appear, press return.
Quit Terminal to return to the main screen. Try the installation again.
2. If the date is correct, or if you still can't install after correcting it, see beow.
Start up in Recovery mode, launch Disk Utility, select the startup volume ("Macintosh HD," unless you gave it a different name), and run Repair Disk (not Repair Permissions.) If any problems are found, repeat. Then restart as usual.
If you don't already have a current backup, you must back up your data before you take the above step. You may be able to back up, even if the system isn't fully functional. Ask if you need guidance.
Directory corruption in a MacOS journaled volume is always the result of a drive malfunction. It's not caused by power failures, system crashes, or anything else. You might choose to tolerate such a malfunction once in the life of a drive. If it's repeated, the drive must be replaced, or there is some other hardware fault that needs to be corrected. Ignoring repeated directory errors will result in data loss.

Pourquoi le airdrop ne fonctionne pas en iOS 8 et OSX Yosemite comme promis par apple ?

pourquoi le airdrop ne fonctionne pas en iOS 8 et OSX Yosemite comme promis par apple ?

When you have the problem, note the exact time: hour, minute, second.
These instructions must be carried out as an administrator. If you have only one user account, you are the administrator.
Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad and start typing the name.
The title of the Console window should be All Messages. If it isn't, select
          SYSTEM LOG QUERIES ▹ All Messages
from the log list on the left. If you don't see that list, select
          View ▹ Show Log List
from the menu bar at the top of the screen.
Each message in the log begins with the date and time when it was entered. Scroll back to the time you noted above.
Select the messages entered from then until the end of the episode, or until they start to repeat, whichever comes first.
Copy the messages to the Clipboard by pressing the key combination command-C. Paste into a reply to this message by pressing command-V.
The log contains a vast amount of information, almost all of it useless for solving any particular problem. When posting a log extract, be selective. A few dozen lines are almost always more than enough.
Please don't indiscriminately dump thousands of lines from the log into this discussion.
Please don't post screenshots of log messages—post the text.
Some private information, such as your name, may appear in the log. Anonymize before posting.

OSX Yosemite protression bar stuck at 50%

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