Every time I download Firefox I get a message that it is damaged

I have tried to download Firefox several times today. When I try to install it I get this message:
"Firefox" is damaged and can't be opened. You should move it to the Trash.

Note the ftp downloads site also exposes the md5 checksum for each download version. You will be able to use that information to give an indication of the file downloading without corruption, see http://en.wikipedia.org/wiki/Md5sum
(Sorry I do not use a Mac so can not say exactly how you run that check on a Mac)

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When I start to download Firefox, I get a message that says "This type of file can harm your computer. Do yiu want to keep Firefox...p7.0.1.exe anyway? What does that mean and in what way can it harm my computer? Do I download it anyway?

When I start to download Firefox, I get a message that says "This type of file can harm your computer. Do yiu want to keep Firefox...p7.0.1.exe anyway? What does that mean and in what way can it harm my computer? Do I download it anyway?

You get that message any time you download an executable file. It is safe to open as long as you download from http://www.mozilla.org/en-US/firefox/new/

When trying to download firefox I get a message that says can't download/ connection reset

I ran into some malware over the weekend. Did a system restoration. I've tried several times to download firefox. Each time it runs for a minute or two and then I get a message that says can't download; connection was reset.

You get that message any time you download an executable file. It is safe to open as long as you download from http://www.mozilla.org/en-US/firefox/new/

I am trying to update Mac software. but each time I download Compressor, I get a message that the update cannot be saved because it may have been corrupted. What should I do?

When I download software updates, I continually get the message "The update “Compressor 1.2.1” can’t be saved.The update could not be expanded and verified. It may have been corrupted or tampered with during downloading. The update will be downloaded and checked again the next time that Software Update runs." What do I need to do? This seems to be blocking other software updates.

By twice, I mean is there at least two copies of the same Time Machine data? Backing up several times a day with Time Machine does not yield two distinct separate restorable sources. Only one is made.

Every time I open firefox I get a page that is says new tab, on bottom left is funm,picture of an owl, ds,How do i make it go away

the tab allows you to put up urls ie favorites.
How do i get rid of it, I do not want to use it

Are you talking about the New Tab Page? Click the 3×3 grid icon in the top right corner to hide the tiles. See the "How do I turn the new tab page off?" section of the following article for a screenshot.
* [[New Tab Page – show, hide and customize top sites]]

Every time i download something i get this error message "Fireclam Problem"

Every time i download anything i get this problem once the download is completed.
Fireclam Problem
The program executable (null) could not be found.
Make sure that ClamAV/ClamWin is installed properly and check the Fireclam settings
I downloaded the add-on Fireclam, it didn't help.
Please HELP how do i make this error message stop popping up. Thanks :)

Hi, Kmkriel,
I did some research on the add on and all that came up are the crashes for that add on. Please disable the add on and see if the error message continues.
After reading about the add on, it seems that ClamAV/ClamWin needs to be installed in order for the scan to take place before the download.
If this continues when the add on is disabled please do a virus scan. Sometimes a problem with Firefox may be a result of malware installed on your computer, that you may not be aware of.
You can try these free programs to scan for malware, which work with your existing antivirus software:
* [http://www.microsoft.com/security/scanner/default.aspx Microsoft Safety Scanner]
* [http://www.malwarebytes.org/products/malwarebytes_free/ MalwareBytes' Anti-Malware]
* [http://support.kaspersky.com/faq/?qid=208283363 TDSSKiller - AntiRootkit Utility]
* [http://www.surfright.nl/en/hitmanpro/ Hitman Pro]
* [http://www.eset.com/us/online-scanner/ ESET Online Scanner]
[http://windows.microsoft.com/MSE Microsoft Security Essentials] is a good permanent antivirus for Windows 7/Vista/XP if you don't already have one.
Further information can be found in the [[Troubleshoot Firefox issues caused by malware]] article.
Did this fix your problems? Please report back to us!

Every time I download anything I get an error message stating ...could not open ....dmg because it is either not a supported file type or the file has been damaged." What do I need to do to fix this problem?

For the last month or so, every time I download anything I get an error message stating "........could not open ...... .dmg because it is either not a supported file type or because the file has been damaged...." I do not know what to do to fix this issue. Any ideas?

hmmm.... try this
basic troubleshooting:
Repair Disk Permissions http://support.apple.com/kb/PH5821
Repair Disk http://support.apple.com/kb/ht1782
reset ACLs http://osxdaily.com/2011/11/15/repair-user-permissions-in-mac-os-x-lion/

Every time i launch garageband i get this message "Error code 28773 was returned by the Audio driver."

HI. I just got a new macbook pro 15".
every time i launch garageband i get this message
"Error code 28773 was returned by the Audio driver."
when i hit record, the shaded area in GB starts to advance, but it doesn't record any sound, and when i hit the space bar, the recorded area disappears.
anyone know how to fix this?
I have installed BOOM, but i think that's the only extra sound software i have.]
PLEASE HELP!
thanks,
mojoman22

Please read this whole message carefully, especially the warnings, before doing anything.
1. The changes to your configuration suggested here should be considered provisional; they may not solve your problem, or they may remove functionality that you find useful. If a third-party system modification that you want to keep is causing the problem, seek help from its developer.
2. WARNING: Back up all data now if you haven’t already done so. Before proceeding, you must be sure you can restore your system to its present state, even if it becomes unbootable. If you’re not sure you can do that, STOP — DON’T CHANGE ANYTHING. If you’re dissatisfied with the results of the procedure suggested below, restore from your backup. I will not be responsible for the consequences, and I will not be able to help, if you ignore this warning.
3. You should either remove or update the following system modification(s), if an update is available from the developer:
Parallels
and definitely remove at least the following:
Boom
† MacKeeper
† VirusBarrier
4. Whatever you remove must be removed completely, and (unless otherwise specified in this message) the only way to do that is to use the uninstallation tool, if any, provided by the third-party developers, or to follow their instructions. If the software has been incompletely removed, you may have to re-download or even reinstall it in order to finish the job. I can't be more specific, because I don't install such things myself. Please do your own research.
Here are some general guidelines to get you started. Suppose you want to remove something called “BrickYourMac.” First, consult the product's Help menu, if there is one, for instructions. Finding none there, look on the developer's website, say www.brickyourmac.com. (That may not be the actual name of the site; if necessary, search the web for the product name.) If you don’t find anything on the website or in your search, email the developer. While you're waiting for a response, download BrickYourMac.dmg and open it. There may be an application in there such as “Uninstall BrickYourMac.” If not, open “BrickYourMac.pkg” and look for an Uninstall button.
Again, please don't ask me to do this research for you. You can do it better than I can, because I haven't installed the product and I may not even know what it is.
If you can’t remove software in any other way, you’ll have to erase your boot volume and perform a clean reinstallation of OS X. Never install any third-party software unless you're sure you know how to uninstall it; otherwise you may create problems that are very hard to solve.
WARNING: Trying to remove complex system modifications by hunting for files by name often will not work and may make the problem worse. The same goes for "utilities" that purport to remove software.
5. I recommend that you never reinstall the modifications marked with a dagger (†) above, if any. If your problem is resolved after uninstalling all the above modifications and rebooting, but you still want to use some of those not marked with a dagger, you can experiment with putting them back, one at a time, testing carefully after each step. Keep in mind that system modifications may be incompatible with each other or with future OS X updates, so it may not be clear which one is at fault.
6. If you still have problems after making the suggested changes and rebooting, post again. Remember: if you don’t like the results of this procedure, you can undo it by restoring from the last backup you made before you started.
Remove the "MacKeeper" crapware as follows.
Note: These instructions apply to the version of the product that I downloaded and tested in early 2012. I can't be sure that they apply to other versions, nor do I intend to repeat the test.
IMPORTANT: "MacKeeper" has what the developer calls an “encryption” feature. In my tests, I didn't try to verify what this feature really does. If you used it to “encrypt” any of your files, “decrypt” them before you uninstall, or (preferably) restore the files from backups made before they were “encrypted.” As the developer is not trustworthy, you should assume that the "decrypted" files are corrupt unless proven otherwise.
In the Finder, select Go ▹ Applications from the menu bar, or press the key combination shift-command-A. The "MacKeeper" application is in the folder that opens. Quit it if it's running, then drag it to the Trash. A dialog will pop up asking why you want to uninstall it. You don't have to provide that information. Enter anything you like in the text box, then click the Uninstall button. All the functional components of the software will be deleted. That's the only useful feature of "MacKeeper:" it deletes itself. Reboot.
Do not try to uninstall by dragging the MacKeeper icon in the Dock or the LaunchPad to the Trash.
Here are some general suggestions. If you want your computer to be usable, don't install crapware, such as “themes,” "haxies," “add-ons,” “toolbars,” “enhancers," “optimizers,” “accelerators,” “extenders,” “cleaners,” “defragmenters,” “firewalls,” "barriers," “guardians,” “defenders,” “protectors,” most “plugins,” commercial "virus scanners,” "disk tools," or "utilities." With very few exceptions, this kind of material is useless, or worse than useless.
The more actively promoted the product, the more likely it is to be garbage. The most extreme example is the “MacKeeper” scam.
The only software you should install is that which directly enables you to do the things you use a computer for — such as creating, communicating, and playing — and does not modify the way other software works. Never install any third-party software unless you know how to uninstall it.

Every time I start iTunes I get the message: "iTunes exec has been set to run in compatability mode for an older version of Windows. Turn off compatability mode for iTunes before you open it." How do I turn off the compatability mode?

Every time I start iTunes I get the message: "iTunes exec has been set to run in compatability mode for an older version of Windows. Turn off compatability mode for iTunes before you open it." How do I turn off the compatability mode? Particularly when I have to do it before I turn on iTunes.

Try the following document, only be sure that none of the boxes in the compatibility mode tab are checked (not just the compatibility mode box itself):
iTunes for Windows: How to turn off Compatibility Mode

When I open firefox I get a message that "A copy of Firefox is already open. Only one copy of Firefox can be open at a time"

When I open firefox I get a message that "A copy of Firefox is already open. Only one copy of Firefox can be open at a time" Nothing I have tried fixes the problem

See http://kb.mozillazine.org/Profile_in_use

I am unable to download firefox.i get a message telling me that my computer needs to restart to complete the uninstal i just did

MY ORIGINAL PROBLEM I WAS HAVING WITH FIREFOX IS THAT I WOULD GET A MESSAGE TELLING ME THE FIREFOX WAS RUNNING AND I NEEDED TO CLOSE FIREFOX OR RESTART MY SYSTEM.THERE WAS NOTHING RUNNING,BUT RESTARTED ANYWAYS.I DECIDED TO TRY AND UNINSTALL AND THEN REINSTALL.EVERYTHING WORKED WELL.THE PROBLEM SEEMED TO HAVE GONE AWAY.THE PROBLEM REAPPEARED AND THOUGHT I WOULD DO THE UNINSTALL AGAIN,AND THAT BRINGS ME UP TO CURRENT PROBLEM.EVERYTIME I TRY TO DOWNLOAD FIREFOX,I GET THE MESSAGE TELLING ME TO RESTART MY SYSTEM TO COMPLETE A PREVIOUS UNINSTALL.I HAVE TRIED DIFFERENT VERSIONS AND THEY ALL DO THE SAME THING.I WANT MY FIREFOX BACK!!!!I CAN'T EVEN THINK ABOUT HAVING TO GO BACK TO IE ANYTHING!

If you are getting repeatedly prompted to authorise your account then see if this page helps : http://support.apple.com/kb/TS1389

Every time I launch iTunes I get the message: "Do you want the application iTunes.app to accept incoming network connections" Any suggestions?

every time I launch iTunes I get the message: "Do you want the application iTunes.app to accept incoming network connections" Any suggestions?

Just fixed this on my machine, the easiest way to remove this pop-up assuming you are no longer needing that software to print is the following:
Open Finder
Go > Go To Folder...
Type In: "~/Library/Application Support"
Delete All Folders Named Kodak
Open System Preferences
Go to "Security & Privacy"
Click the lock and enter your admin password
Click the Firewall Tab
Go to "Firewall Options..."
Find KodakAiO
Right-click KodakAiOBonjourAgent or equivalent (I forget the exact name)
Click "Show in Finder"
Go Back to a folder and delete the Kodak Folder there.
Remove Kodak from Firewall Options by selecting it and clicking the " - " button the base of the list.
or
Open Finder
Go > Go To Folder...
Type In: "~/Library/Printers"
Delete All Folders Named Kodak
I'm going off memory, so If I forgot something let me know.

Every time I open Safari, I get a message (and a pop-up) that says the Safari browser I'm using does not support Community Toolbar. How can I get rid of the Community Toolbar or at least turn it off?

Every time I open Safari, I get a message (and a pop-up) that says the Safari browser I'm using does not support Community Toolbar. How can I get rid of the Community Toolbar or at least turn it off?

That toolbar/ct plugin seems to cause problems for all who install it!
Close Safari, then locate and delete the following files and it should be gone:
/Library/Application Support/Conduit
/Library/InputManagers/CTLoader
/Library/Receipts/ctloader.pkg
/Library/Receipts/<Toolbar name>.pkg
/Library/Application Support/SIMBL/Plugins/CT2285220.bundle
/Users/<User name>/Library/Application Support/Conduit
where / is the root library on your Hard Disk.
If you are running Snow Leopard you should also look here:
Library/launchAgents/com.conduit.loader.agent.plist
Library/Application support/conduit plugins
Note: Safari does not support any third-party toolbars except those supplied as an extension to Safari via the Extension Gallery.

When I try to start Firefox, I get a message that it is already running but not responding and I can't run another Firefox at the same time. I uninstalled and reinstalled. No change. Tried various other suggestions. Help!!

When I try to start Firefox, I get a message that it is already running, but not responding and that I should close it before trying to run another Firefox. But I cannot find a way to close Firefox program that is not running as far as I can see. I tried uninstalling and reinstalling Firefox, but that did not work. I've tried various other things, but no luck. I thought programs should stop when the computer is turned off, but that didn't work either.

How are you opening the Profile Manager?
*http://kb.mozillazine.org/Profile_Manager
Sounds that Firefox is still or already running.<br />
See:
*http://kb.mozillazine.org/Kill_application

When downloading iTunes I get error message that msvcr80.dll is missing. I can't uninstall iTunes.

When downloading iTunes I get error message that msvcr80.dll is missing. I can't uninstall iTunes. How do I fix the problem?

You have to uninstall everything! Check out Turingtest2 remarks
https://discussions.apple.com/message/24652557#24652557

Every time I download Firefox I get a message that it is damaged

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