Hi there, my iMac has automatically been deleting files from my thumb drive when I try to open them. The lost files aren'tin the trash or anywhere else I can think of. Any ideas?

If one drive works and the other doesn't that points the finger at the errant drive. They are cheap, replace it. To check formatting right click it in Finder and choose Get Info and look for Format type. Finally do you eject it when removing it or do you just pull it out of the USB connection?

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How do I copy my old xl files from my XP machine to operate on xl for Mac on my new iMac. When I copy them onto a stick and transfer them it automatically makes them xls files which are then corrupted when I try to open them in xl for mac

How do I copy my old xl files from my XP machine to operate on xl for Mac on my new iMac. When I copy them onto a stick and transfer them it automatically makes them xls files which are then corrupted when I try to open them in xl for mac

Sorry, yes this is Microsoft Excel. The Microsoft XP has Excel files denoted as xl, the later versions of Microsoft Excel are denoted as xls files. The later verions of Microsoft Excel open the xl files OK, does Excel for Mac not able to do this?

I've just installed Mavericks on my Macbook Pro, which took forever to install, and everything appears to be fine except for iPhoto. When I try and open iPhoto I get a popup saying its not supported by this OS. Anyone have any ideas??? Help please.

I've just installed Mavericks on my Macbook Pro, which took forever to install, and everything appears to be fine except for iPhoto. When I try and open iPhoto I get a popup saying its not supported by this OS. Anyone have any ideas??? Help please.

Click App Store from your Apple menu  drop down menu then select Updates from the App Store menu bar.

After restarting my computer firefox is deleted for Windows, when i try to open firefox a message pops up saying the program has been moved from its original location and is unable to run How do I get Firefox on my computer permanently?

After restarting my computer firefox is deleted for Windows, when i try to open firefox a message pops up saying the program has been moved from its original location and is unable to run How do I get Firefox on my computer permanently?

I have tried everything I could to fix this, but some things require actually being on Firefox, and since I cannot get on, I cannot click on the tabs to do it. I have even totally uninstalled firefox, and that has not fixed this. I still get the same message that firefox is running and I need to close it or restart (which I have also tried dozens of times). I have removed things like Java, and that has not helped either. If I cannot even get on line in firefox, how can I fix this. I am not crazy about using internet explorer, but right now, it is my only option. I even tried to start in safe mode, and the same message box pops up!

When I try to open an .ai/pdf file received through my email, it won't open and asks for a password. I have never set up any kind of password for email security, but have tried typing in my standard passwords. Nothing works. I wonder if it has anything to

When I try to open an .ai/pdf file received through my email, it won't open and asks for a password. I have never set up any kind of password for email security, but have tried typing in my standard passwords. Nothing works. I wonder if it has anything to do with the use of my Wacom3 Tablet...I've been having trouble with it and was getting the same message when trying to open the User's Manual in my Applications/WacomTablet file on my hard drive. Any suggestions? I just downloaded the latest version for the Wacom and recently upgraded to Snow Leopard 10.6.7 (which I hate, and my CS3 hates, etc.)

It sounds like you have a a password-protected PDF. The password was set by the person who encoded it.

When i open iphoto i see my photo's for 1 second and then they are gone .The photo's are still there but i can see them only on the bottom or top of my screen when i try to open them i get a sign that it is not possible.Can somebody please help me?

when i open iphoto i see my photo's for 1 second and then they are gone .The photo's are still there but i can see them only on the bottom or top of my screen when i try to open them i get a sign that it is not possible.Can somebody please help me?

Have you upgraded to iPhoto 9.6 for compatibility with Yosemite? If not, try that first.
It looks like iPhoto has lost the connection between the thumbnails and the original image files.
This can be caused by a corrupted iPhoto library, or the originals have been deleted or moved.
Try first to rebuild your iPhoto Library:
If you do not have a current backup of the iPhoto library, make a copy of the library, but do not overwrite any previous backup.
Launch iPhoto with the ⌥⌘-key combination (option-command) held down.
Select "rebuild" from the first aid panel. This may take a while for a large library.
Can you now see your photos again?
If not, rebuild the library with iPhoto Library manager as described by Old Toad: Re: iphoto crashed

My computer has some serious problems, my iphoto only shows thumb size pics when I try to open them, i tried to rebuild my files from folders that had the pics in them. originally all the photos has a large delta with a question mark. also I can't back up

my computer has some serious problems, my iphoto only shows only shows thumb size pics when I try to open them, i tried to rebuild my files from folders that had the pics in them. originally all the photos had a large delta with a question mark. also I can't back up the library file because its not there. I went to time machune and tried to find the file but I can't find it or I am looking in the wrong place. I also lost my Idvd file, only have broken chain showing.

Details please
What version of iPhoto and of the OS?
i tried to rebuild my files from folders that had the pics in them.
Exactly what did you do and how did you do it? this ay be the cause of your issue but without details we can n=ony guess
my iphoto only shows only shows thumb size pics when I try to open them,
where do you see htis? In the iPhoto window? what does "try to pen them" exactly mean?
originally all the photos had a large delta with a question mark.
Ok - this usually has a simple solution - do you still have a copy of the library that has this problem?
also I can't back up the library file because its not there.
This makes no sense at all - all of your previous statements indicate that you do have an iPhoto library but have some problems with it
By default your iPHoto library is located in your Pictures folder and is named iPhtoo library - if tha tis not the case the you have moved or renamed it and only you know what you did until you tell us the details
I went to time machune and tried to find the file but I can't find it or I am looking in the wrong place.
Again unless you actually share what and how you are doing thing but continue to simply state abstract problems it is no possible to assist you - details on using Time Machine are here -- http://support.apple.com/kb/HT1427?viewlocale=en_US&locale=en_US -- and -- http://pondini.org/TM/FAQ.html ---
I also lost my Idvd file, only have broken chain showing.
This would be better addressed in the iDVD forum - but again unlesss yu share detailed information no one can assist
LN

Some photos in iphoto are missing and there are blank thumbnails which when i try to open them show an exclamation sign

some photos in iphoto are missing and there are blank thumbnails which when i try to open them show an exclamation sign

The exclamation make is an indication that iPhoto has broken the file path to the original photo.
Make a temporary, backup copy (if you don't already have a backup copy) of the library and apply the two fixes below in order as needed:
Fix #1
Launch iPhoto with the Command+Option keys held down and rebuild the library.
Select the options identified in the screenshot.
Fix #2
Using iPhoto Library Manager to Rebuild Your iPhoto Library
Download iPhoto Library Manager and launch.
Click on the Add Library button, navigate to your Home/Pictures folder and select your iPhoto Library folder.
Now that the library is listed in the left hand pane of iPLM, click on your library and go to the File ➙ Rebuild Library menu option
In the next window name the new library and select the location you want it to be placed.
Click on the Create button.
Note: This creates a new library based on the LIbraryData.xml file in the library and will recover Events, Albums, keywords, titles and comments but not books, calendars or slideshows. The original library will be left untouched for further attempts at fixing the problem or in case the rebuilt library is not satisfactory.
OT

I recently downloaded a series of instructional videos. They are in mp4 format and rather large (~500MB on average). When I try and open them with Quicktime (default) they will not play. Are there file size restrictions? Any suggestions would be great

I recently downloaded a series of instructional videos. They are in mp4 format and rather large (~500MB on average). When I try and open them with Quicktime (default) they will not play. Are there file size restrictions? I have gone through all of the most recent software updates. Any suggestions would be great. Thanks.

Try VLC Media Player. It has a reputation for playing just about anything you throw at it.

I edited photos in photo shop that I took off of my camera and then whenI was done I saved them in a folder in my documents as a JPEG. Now when I try to open them there is an encrytion error me assage.

I edited photos in photo shop thay I took off my camera and when I was done I saved them in a folder in my documents as a jpeg. now when I try to open them there is an encryption error message

The folks here would need far more information from you before they provide help.
You know the drill: Exact OS...PS version...etc. The more you provide, the better.
What is the exact message that is displayed?
What have you tried so far?
Do the files display on your browser? In Bridge?
What are you doing when it happens?
Are the files still on your cameras card? If so and,you copy one to your desktop and save it without changes, does it reload properly?
Don't worry about providing too much information. Every little bit helps.

Have CS 5 Installed on my iMac and works ok. But installed on my new MacBook Pro it won't open NEF files from my Nikon D810. Displays NEF icons, but when I try and open them the response is: Make sure latest RAW updates are installed. If problem persists

Have CS 5 Installed on my iMac and works ok. But installed on my new MacBook Pro it won't open NEF files from my Nikon D810. Displays NEF icons, but when I try and open them the response is: Make sure latest RAW updates are installed. If problem persists follow link: http://www.adobe.com/go/kb407111. Have installed Bridge 5.0.2.4; Raw Ref Version 7.0.0.308; DNG converter_8_7_1.dmg; Bridge 5.0.2 Update 2. Also same problem with Lightroom which I don't normally use. Lightroom_3_LS11_mac_3_6.dmg installed.

In the link you posted it states that the Nikon 810 requires ACR 8.6 or newer.
Version of ACR are specific to versions of Photoshop. You cannot use 8.6 nor even 7.0.in CS5.
I believe that ACR 6.7 is the latest that will work with CS5, so make sure you have this installed and get rid of ACR 7.
Having 2 versions of ACR will cause problems.
You have already downloaded DNG Converter 8.7.1.
Have you double clicked the DMG file to allow you to install DNG Converter on your computer?
Be aware that DNG converter is a stand-along application and not a plug-in.
You need to open DNG converter at select the FOLDER that contain your .NEF files.
Don't open the folder and try to select individual files, it doesn't work that way.
After converting your D810 files to DNGs you can then open the DNGs in CS5
The problem is your camera didn't exist when CS5 & its version of ACR was developed.
i don't use Lightroom, but the list mentions Lightroom 5.6 as needed to open D819 so your 3.6 version of LR won't cut it.

I have been taking screenshots on my mac book pro and they have been saving to my desktop. However when i try to move them into a folder, they don't move at all! I have changed my setting in view options to 'none' but they still don't move?

I have been taking screenshots on my mac book pro and they have been saving to my desktop. However when i try to move them into a folder, they don't move at all! I have changed my setting in view options to 'none' but they still don't move?

Got to your Desktop folder in the Finder sidebar, command i will open the info pane.
What are your permissions here? Unlock the pad lock and Change to read write.
Are you experiencing other problems?
Reset Home Directory Permissions and ACLs
http://osxdaily.com/2011/11/15/repair-user-permissions-in-mac-os-x-lion/

Cannot open photoshop, illustrator, indesign. when I try to open them, nothing come out, the adobe application manager will automatically pop out.

cannot open photoshop, illustrator, indesign. when I try to open them, nothing come out, the adobe application manager will automatically pop out.

go to the installation directory (not a shortcut) and confirm they're installed and try to start from the install directory.

TS2529 I recently got a new iphone and some of my apps don't work anymore. When I try to open them they either crash immediately or my phone asks for my iTunes Store password and then the app crashes. Any ideas? Help!

I've tried to uninstall and reinstall the app but nothing happens. When I try to open the app, it either crashes immediately or asks me for my iTunes password and the the app does nothing or crashes. Has anyone else had this problem? Any suggestions? Also, it seems that my phone asks me for my iTunes password randomly, when I'm not trying to open apps.
The app that I have the most problem with is the Simpsons game. I've tried to contact EA as well as apple and gotten nowhere.
Please help if you have knowledge of what to do
Thanks!

If you get an error that says can't backup, try moving the existing backup file to a safe location and thry again. again. You can find the location of the backup file here:
iPhone and iPod touch: About backups

Getting a error message when i try to open up i tunes file msvcr80.dll not found. I have tried to reinstall i tunes still wont work. Any ideas?

getting a error message when i try to open i tunes, file msvcr80.dll not found. Have tried to reinstall i tunes but receive another error message when thats done down loading it reads service apple mobil device failed to start, verify that you have sufficent priviliges to start system. Any ideas?

See Troubleshooting issues with iTunes for Windows updates.
tt2

Hi there, my iMac has automatically been deleting files from my thumb drive when I try to open them. The lost files aren'tin the trash or anywhere else I can think of. Any ideas?

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