Updating compressor fails with "The product distribution file could not be verified. It may be damaged or was not signed."

The message appears in the App Store page. App Store support suggested removing Compressor and reinstalling it. Trying to reinstall produced the same message: "The product distribution file could not be verified. It may be damaged or was not signed." And compressor disaappeared from my "purchased" list. Trying the purchase route, i get the same message. The App Store support guy said to try here since he and his superviosr had no idea what to do.

Posting this triggered a suggestion in the "More like this" that solved the problem.  In
https://discussions.apple.com/message/16063398#16063398%2316063398 the third response gives effective guidance for fixing the problem.

Similar Messages

  • I can't update IPhoto, it says "the product distribution file could not be verified it must be damaged or signed in" I bought it on iTunes and have 8,000 photos already. how can I update and correct this??

    I can't update IPhoto, it says "the product distribution file could not be verified it must be damaged or signed in" I bought it on iTunes and have 8,000 photos already. how can I update and correct this??

    You might try resetting the App Store application and clear the cookies via this menu:
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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.
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    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:
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    Now here:
    ~/Library/Preferences
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    com.apple.storeagent.pllist
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  • File and product distribution could not be verified. it may be damaged or was not signed. ?

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    Please read this whole message before doing anything.
    This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
    The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, or by corruption of certain system caches. 
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    Safe mode is much slower to boot and run than normal, and some things won’t work at all, including sound output and  Wi-Fi on certain iMacs. The next normal boot may also be somewhat slow.
    The login screen appears even if you usually log in 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, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of the test.

  • Product distribution file could not be verified. it may be damaged or was not signed.??

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    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.
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    Step 2
    Back up all data.
    From the menu bar, select
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    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.
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    Step 4
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  • Whenever I try to update my iPhoto program I get this error message "The product distribution file could not be verified. It may be damaged or was not signed."

    Whenever I try to update my iPhoto program I get this error message "The product distribution file could not be verified. It may be damaged or was not signed."

    Please read this whole message before doing anything.
    This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
    The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, or by a peripheral device. 
    Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode and log in to the account with the problem. Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Ask for further instructions.
    Safe mode is much slower to boot and run than normal, and some things won’t work at all, including Wi-Fi on certain iMacs. The next normal boot may also be somewhat slow.
    The login screen appears even if you usually log in 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, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of the test.

  • I can't download an app or update ,It says ( the product distribution file could not be verified) in App Store ,and in iTunes says An unknown error occurred (-50) ?

    Hi:all
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    See this link from another similar question.  It may need patience to resolve.  I think Thomas Reed's suggestion is best place to start.
    App Store rejects buy of Mountain Lion: Apple Support Communities

  • HT201364 trying to download os x mavericks and i get an error saying "The product distribution file could not be verified. It may be damaged or was not signed." how do i fix this so i can update my new macbook pro?

    "The product distribution file could not be verified. It may be damaged or was not signed."
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    "Update your new MacBook Pro"?
    Well, if your MacBook Pro is new, it already has Mavericks installed and there is nothing to update.
    Go to the Menu Bar, and click the Apple logo.  Then click "About This Mac."  Does it show OS X 10.9 or 10.9.1?
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  • HT1338 The Mac App Store shows an update available for iMovie but when I click "update" it gives me this message, "The product distribution file could not be verified. It may be damaged or was not signed." What can I do to update this program?

    The Mac App Store shows an update available for iMovie but when I click "update" it gives me this message, "The product distribution file could not be verified. It may be damaged or was not signed." What can I do to update this program?

    http://www.apple.com/support/mac/app-store/contact.html?form=account

  • Download failed and receive the following message: The product distribution file could not be verified. It may be damaged or was not signed.

    download failed due to internet problems. I can't restart the download again and receive the following message: The product distribution file could not be verified. It may be damaged or was not signed. please help thanks

    I went to Purchases and it worked from there having had the same problem you describe.

  • HT201364 I have a 2013 iMac, with OS X version 10.8.5.  Have been trying to download OS X Mavericks without success; error message "we could not complete your purchase, the product distribution file could not be verified, etc".  Please help; TQ

    I have a 2013 iMac, with OS X version 10.8.5.  Have been trying to download OS X version 10.9 (OS X Mavericks) without success; error message "we could not complete your purchase, the product distribution file could not be verified, etc".  Please help; TQ

    Please read this whole message before doing anything.
    This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
    The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
    Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. 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 boot, and again when you log in.
    Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Ask for further instructions.
    Safe mode is much slower to boot 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 boot 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, reboot as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.

  • Mavericks Update - Error message - The product distribution file could not be verified

    Help!
    Trying to download mavericks (from 10.7.5) as I have just had a new hard disk isntalled and need to start from scratch.
    Wanting to re download iphoto but I can't as I need a newer OS so trying to download mavericks from the app store. My internet is very slow and keeps cutting out so I have tried a few times but it's not working.
    Now I'm getting an error message - 'the product distribution fil could not be verified'
    If anyone can help that would be great.
    Or even let me know where I can get a copy of iphoto to suit OS 10.7.5 so I don't need to download a whole new OS.

    You're trying to download a 5 GB file. If your Internet connection is lousy, you won't have much success. Try another network.

  • Buy Mountain Lion: The product distribution file could not be verified. It may be damaged or was not signed.

    Hi community,
    When trying to buy Mountain Lion I get: "The product distribution file could not be verified. It may be damaged or was not signed.”, any clue on how to fix this issue? It only happens in one of my computers.
    In the console I get an error when trying to purchase it:
    7/26/12 9:50:34.387 PM App Store: FRPurchaseManager: Preflight operation for 537386512 failed with error: Error Domain=com.apple.appstore Code=0 "The product distribution file could not be verified. It may be damaged or was not signed." UserInfo=0x7fde9bc452a0 {NSLocalizedFailureReason=Cannot create PKProduct from "file://localhost/var/folders/8l/ndt85j717d3_k8gr6ztmljdc0000gn/C/com.apple.app store/537386512/preflight.pfpkg" Error Domain=NSURLErrorDomain Code=-1100 "The requested URL was not found on this server." UserInfo=0x7fde9bc43b50 {NSUnderlyingError=0x7fde9bc42e60 "The requested URL was not found on this server.", NSErrorFailingURLStringKey=file:///var/folders/8l/ndt85j717d3_k8gr6ztmljdc0000g n/C/com.apple.appstore/537386512/preflight.pfpkg/index.sproduct, NSErrorFailingURLKey=file:///var/folders/8l/ndt85j717d3_k8gr6ztmljdc0000gn/C/co m.apple.appstore/537386512/preflight.pfpkg/index.sproduct, NSLocalizedDescription=The requested URL was not found on this server.}, NSLocalizedDescription=The product distribution file could not be verified. It may be damaged or was not signed., NSUnderlyingError=0x7fde9bc442b0 "The requested URL was not found on this server."}
    1) I deleted the /var/folders/8l folder (gets recreated when opening the app), no result.
    2) Tried to check "Best attempt" for both OCSP and CRL certificate management in Key Chain.
    No result in any way.
    Any idea?

    Hello
    It can be an issue related to antivirus so disable it or download in safe mode
    regards

  • I tried to download Mavericks overnight and it never finished.  When I tried to download again I got this message "We could not complete your purchase.The product distribution file could not be verified. It may be damaged or was not signed." Help?

    I tried to re-download Mavericks after an apparent failed attempt and now I get the message "We could not complete your purchase.  The product distribution file could not be verified.  It may be damaged or was not signed."
    Can anybody help?

    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 boot, and again when you log in.
    Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a Fusion Drive or a software RAID, you can’t do this. Ask for further instructions.
    Safe mode is much slower to boot 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 boot 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, reboot as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.

  • HT2404 Already purchase and sign. Lost internet data...aaaahh... .error - "We could not complete your purchase.The product distribution file could not be verified. It may be damaged or was not signed".

    Already purchase and sign. Lost internet data...aaaahh... .error - "We could not complete your purchase.The product distribution file could not be verified. It may be damaged or was not signed".

    Update: i spoke to a very knowledgeable applecare representitive who walked me thrue the process, we were trying to figure out what exactly was preventing Mountain Lion from installing & (after a process of elimination) it turns out you need to be log in as an Admin to download it, we also made sure everything was up-to-date. Downloading Mountain Lion took about 40 minutes (with roadrunner high speed internet, DSL might be a bit slower) once it was downloaded the installation process was very intuititive with just a few clicks and about 35 minutes i had the latest Operating System.

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