I try to download the OS X Mountain Lion, and I keep getting an error saying, "The product distribution file could not be verified. It may be damaged or was not signed." Please Help!

If you have Intego VirusBarrier X6 installed
1. Open /Applications/VirusBarrier X6.
2. Click on the "Surf" button.
3. Click on the "Ad Banner Filter" tab.
4. Click "OFF" next to "Banner advertisement filter".
5. Start the computer in Safe Boot, then restart the computer into normal mode.
If don't not have Intego Virus Barrier installed
1. Verify that the date and time is correct on the computer.
2. Safe Boot once, then restart normally, then try downloading again.
3. Try with a different user account if the issue persists
If the issue persists
Install Lion onto an empty partition (internal or external).
Note: You can Use Disk Utility to live partition the internal drive and create a second partition large enough to install Lion.
Start from the clean installation of Lion.
Download Mountain Lion from the Mac App Store. Note that the original startup disk can be set as the destination for Mountain Lion during the installation process.

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HT4463 When clicking 'buy' for Mountain Lion in the App store I get the message "product distribution file could not be verified, it may be damaged or was not signed' Anybody know why I get this message. Thanks

When clicking 'buy' for Mountain Lion in the App store I get the message "product distribution file could not be verified, it may be damaged or was not signed' Anybody know why I get this message. Thanks

Make sure your Mac qualifies for Mountain Lion > Upgrade your Mac to OS X Mountain Lion.
If you have anti virus software installed, disable that before downloading apps.
Turn off the Firewall in System Preferences > Security (or Security & Privacy) > Firewall
Try deleting the cache, cookies, and preference files (plist) associated with the App Store.
Quit the App Store if it's open.
Open the Finder. From the Finder menu bar click Go > Go to Folder
Type this exactly as you see it here:
~/Library/Caches/com.apple.appstore/Cache.db
Click Go
Move the Cache.db file to the Trash.
Now here:
~/Library/Preferences
Click Go
Move these files from the Preferences folder to the Trash.
com.apple.appstore.plist
com.apple.storeagent.pllist
Now here:
~/Library/Cookies
Click Go
Move the com.apple.appstore.plist file from the Cookies folder to the Trash.
Empty the Trash, try the App Store.

HT201272 I keep getting an error saying the file is corrupted when I try to download a purchase

I am trying to download a song I purchased from the iTunes store and I keep getting an error stating the file is likely corrupted and to try again. I have the latest iTunes version on my Windows7 machine. Any help would be great.

I'd report the problem to the iTunes Store.
Log in to the Store. Click on "Account" in your Quick Links. When you're in your Account information screen, go down to Purchase History and click "See all".
Find the item that is not downloading properly. If you can't see "Report a Problem" next to the entry, click the "Report a problem" button. Now click the "Report a Problem" link next to the item.
(Not entirely sure what happens after you click that link, but fingers crossed it should be relatively straightforward.)

HT202159 I started download of OS X Mountain Lion and it stopped with "An error has occurred" with no option to resume download. When I go to appstore it shows but again.

I started download of OS X Mountain Lion and it stopped with "An error has occurred" with no option to resume download. When I go to appstore it shows but again.

Try this Discussion...
https://discussions.apple.com/message/19032230#19032230

How can I edit iCal server addresses in Mountain Lion? I keep getting an error with regards to my google calendar and I understand that the way to fix the problem is adjust the server address, but I cannot access it because the preferences are restrictive

How can I edit iCal server addresses in Mountain Lion?
I keep getting an error message with my google calendar, and I heard that if I delete the extra slash at the end of the address the problem will be fixed. But the iCal account preferences take me to system preferences > accounts every time I want to edit the account.
Does anyone know where I can edit the server address?

You should ask in the iCloud forum, this is for iMacs. https://discussions.apple.com/community/icloud/icloud_on_my_mac

What is a user parameter list in iMovie? I am trying to sent the movie from imovie to idvd and I keep getting an error with the user parameter list. Help?

What is a user parameter list in iMovie? I am trying to sent the movie from imovie to idvd and I keep getting an error with the user parameter list. Help?

Can you give more details? What exactly is the entire error message text? there should be an error number too. Are you trying to finalize this to an external disk?

I'm trying to get onto facetime and I keep getting a message saying the server encountered an error processing registration, can anyone tell me why?

I'm trying to get onto facetime and I keep getting a message saying the server encountered an error processing registration please try again later. Can anybody tell me what is going on?

I have read over and actioned ALL recommendations many times over, and still get the Facetime error..! I have reset Host file, looked for iphone certificates, set time/date to auto, checked for suspect DNS entries, cleared caches etc etc. It's become a very fustrating problem. Worked fine for a long time but then suddenly stopped.
I wish I could find the solution...

So i had itunes on my computer it tried to do an update and told me i didnt have the authority to do so...deleted it and tried to reinstall and i keep getting a message saying service "apple mobile device" failed to start verify that you have sufficient

so i had itunes on my computer it tried to do an update and told me i didnt have the authority to do so...deleted it and tried to reinstall and i keep getting a message saying service "apple mobile device" failed to start verify that you have sufficient privleges to do so...what does this mean?

Try the following user tip:
Troubleshooting issues with iTunes for Windows updates

Trying to upgrade to Mountain Lion, error is message; " product distribution file could not be verified. It may be damaged or was not signed"

trying to upgrade to Mountain Lion, error message; " product distribution file could not be verified. It may be damaged or was not signed" ??
what to do? This is in App store. I followed the link e-mailed to me that an upgrade was available....... Puzzled.

Several causes for this problem have been reported. Please take each of the following steps that you haven't already tried. Stop when it's resolved.
Step 1
Back up all data.
From the menu bar, select
 ▹ System Preferences... ▹ Network
If the preference pane is locked, click the lock icon in the lower left corner and enter your password to unlock it. Then click the Advanced button and select the Proxies tab. If any proxy options are selected, make a note of them and then deselect them. You don’t need to change the bypass or FTP settings. Click OK and then Apply. Test. The result may be that you can't connect to any web server. Restore the previous settings if that happens.
Step 2
Rebuild the Spotlight index. If you try to search now from the magnifying-glass icon in the top right corner of the display, there will be an indication that indexing is in progress.
Step 3
Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a Fusion Drive or a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to start and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually login automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.

Everytime i try to download iso5 update for my iphone 4 i keep getting an error and it says if i proceed to update i will lose all contents in my phone?

im having trouble downloading the new update iso5 . . . . everytime it is almost to the end of downloading an error will pop up...? help please

What exactly does the error say?
Updating to iphone 5 does indeed erase your iphone, then it restores the data (assuming you have made sure that everything on your iphone is on your computer first).

Updated to mountain lion and now I get continual errors in PS!

I have the latest version of photoshop CC. Since updating to mountain lion 10.8.5 from lion PS CC doesn't work properly. Several of the tools gives me 'unable to use tool due to program error'. This is useless! I have installed the latest version of photoshop CC. It worked fine before. I can't use the eyedropper but the clone tool is fine. The brush tools are fine. Several of the other tools give this error. I can't see why some would work and others don't.
I worked fine in Lion so there is no reason it shouldn't work in mountain lion. It's so frustrating as it means I cannot use the software I've paid for. I updated via the adobe update manager as the CC desktop system doesn't work
What causes this error message?
Everything is identical to what was there before - late 2011 imac with loads of memory and a wacom bamboo tablet driver with an older graphire tablet. No hardware has changed so it has to be a software error of some kind. The tablet driver is the latest one that works with the tablet I have and that works with mountain lion. I can't alter the version of that.

Try these steps to fix most issues: http://bit.ly/Troubleshoot_PS
I suspect either preferences restore or troubleshoot permissions with new Admin account will solve or give us more clues.

The project could not be loaded, it may be damaged or contain outdated elements - PLEASE HELP

Hi Dear Adobe Forum,
I need help, please
i cant open my project
I72600K
Gygabite Z77Ud5
Matrox Rtx2
16Gb ram
Adobe premiere cs5.0.3
Nvidia geeforce gtx460
u can download my file from here[code]http://speedy.sh/Ahkxh/Anahit1.prproj[/code]http://speedy.sh/Ahkxh/Anahit1.prproj

As a happy user of the Matrox RT.X2 for many years, and later an equally happy user of a Matrox MXO2, I can say from experience that it is highly unlikely that this problem has anything to do with the Matrox hardware!
Can you open a new blank project, and save it?
If you cannot import your faulty project into a new project, can you import the sequence from your faulty project?
Have you tried clearing the Media Cache, clearing your preferences, etc. - all among the techniques used to resurrect a Premiere Pro project that has gone bad???

HT201364 when i tried to update OS X Mavericks, its says The product distribution file could br verified. it may be damaged or was not signed... please help me..

^^
<Email Edited by Host>

Somehow, the download is getting corrupted. First, try repairing your hard drive. Then make sure that you have disabled or uninstalled any anti-virus or internet filtering software. Also, verify that your computer's clock is set properly.
After doing all this, try downloading again. It may be worthwhile to download on a completely different network, especially since that will be the next step if re-downloading on your current network doesn't work.
PS - note that folks won't send you an e-mail directly from these forums, and posting your e-mail address on a public forum is generally not a good idea.

I try to install Muse and I keep getting this error from the Application Mgr.

We've encountered the following issues:
Please connect to internet, then try again.
I am connected!!!!!!!!!!!

Check if it helps. http://helpx.adobe.com/x-productkb/policy-pricing/activation-network-issues.html

I have an iPod Nano 7th generation, and I keep getting an error saying that iTunes could not recognize my device. I have tried nearly everything,except I don't have admin rights on the computer, and really need help.

I've tried a lot to get it to work, even using a new charger and putting it into Disk Mode. I really need help. Can anyone give me some advice? Thanks.

Hi Dawson777,
Thanks for visiting Apple Support Communities.
It sounds like you're receiving the message "An iPod has been detected, but it could not be identified properly" when you connect your iPod nano to your PC. You have tried some good troubleshooting steps already, and you may want to review the additional steps in this article:
iPod nano: Error message saying that iPod 'could not be identified properly'
http://support.apple.com/kb/ts3218
Best Regards,
Jeremy

I try to download the OS X Mountain Lion, and I keep getting an error saying, "The product distribution file could not be verified. It may be damaged or was not signed." Please Help!

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