Got this message "This copy of the Install OS X Mountain Lion application can't be verified. It may have been corrupted...."

Re-download. You got a bad/incomplete download.

Product : Mac App Store

Support Subject : Connecting & Downloading

Sub Issue : Downloading and installing purchased Mac apps

GCRM Case ID : 333405711

See additional info below

Which operating system is installed? Mac OS X v10.7.x

App name:

Order number:

Choose the Mac App Store for your country: United Kingdom

Details:

When trying to purchase mountain lion i get "The product distribution file could not be verified. It may be damaged or was not signed." Please note this is only when trying to purchase mountain lion. I purchased Pages without any problem.

When running console I get:

25/07/2012 19:53:18.798 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=0x7f92999a2c50 {NSLocalizedFailureReason=Cannot create PKProduct from "file://localhost/var/folders/dn/2px177md03g2nzjt1rc0k1zw0000gp/C/com.apple.appst ore/537386512/preflight.pfpkg" Error Domain=NSURLErrorDomain Code=-1100 "The requested URL was not found on this server." UserInfo=0x7f929992a350 {NSUnderlyingError=0x7f929859be00 "The requested URL was not found on this server.", NSErrorFailingURLStringKey=file:///var/folders/dn/2px177md03g2nzjt1rc0k1zw0000gp/C/com.apple.appstore/53738 6512/preflight.pfpkg/index.sproduct, NSErrorFailingURLKey=file:///var/folders/dn/2px177md03g2nzjt1rc0k1zw0000gp/C/com.apple.appstore/53738 6512/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=0x7f929992c2a0 "The requested URL was not found on this server."}

I have also used a vpn connection to another country and get the same response.

The same problem happens on my other computer so it appears to be a common problem.

Both computers (air book and imac) are ML compatible.

Already tried disabling virus barrier and clearing app store cache. No joy

Same error...here are the errors from install.log:

Jul 25 14:31:37 <ip_address> Install OS X Mountain Lion[13477]: Retrieved package com.apple.pkg.CompatibilityUpdate (http://swcdn.apple.com/content/downloads/45/24/041-6653/jknkds84fvfy0fcu6jz9e7pa esb2i9fgrd/OSX_10_8_IncompatibleAppList.pkg)

Jul 25 14:31:37 <ip_address> Install OS X Mountain Lion[13477]: pkgdmg is missing a footer.

Jul 25 14:31:37 <ip_address> Install OS X Mountain Lion[13477]: pkgdmg validation has failed.

Jul 25 14:31:37 <ip_address> Install OS X Mountain Lion[13477]: Stopped operation queue with Error Domain=IAErrorDomain Code=101 "This copy of the Install OS X Mountain Lion.app application can't be verified. It may have been corrupted or tampered with during downloading." UserInfo=0x1003e9640 {IAErrorAlternateAction=App Store, NSLocalizedRecoveryOptions=(

Cancel,

"App Store\U2026"

), NSLocalizedRecoverySuggestion=Delete this copy of the application, and go to the Purchases page of the Mac App Store to download a new copy., NSRecoveryAttempter=<IARecoveryAttempter: 0x7fe114a82540>, NSLocalizedDescription=This copy of the Install OS X Mountain Lion.app application can't be verified. It may have been corrupted or tampered with during downloading.}

Jul 25 14:31:44 <ip_address> Install OS X Mountain Lion[13477]: Removed mutable product

I have re-downloaded image from home network which resolved the installation issue. It appears the image downloaded using office network contributed to the corrupt-image.

I've got the same problem...

"This copy of the Install OS X Mountain Lion application can't be verified. It may have been corrupted or tampered with during downloading."

The progress bar on launchpad seems to be competed once I clicked download OS X Mountain Lion from the app store. I tried deleting and redownloading about 10 times and it still does not work. I'm pretty frustrated.

I've got the same problem.

So, I confirm, problem is still here. I use AppStore Thailand.

Please kindly check and fix it.

Regards,

Jul 25 14:31:37 <ip_address> Install OS X Mountain Lion[13477]: pkgdmg is missing a footer.

Jul 25 14:31:37 <ip_address> Install OS X Mountain Lion[13477]: pkgdmg validation has failed.

It could be a network related issue perhaps, are you on VPN?Have you tried a wired connection?another network perhaps?re-downloading it using the same setup may not work. You have to try another approach

I use AppStore Thailand as well...

Thailand store too!!! What's the poblem??? = = Hey!

When I hit the download button, the download start but finish in a minute...

And when I run the program, it say This copy of the Install OS X Mountain Lion application can't be verified. It may have been corrupted or tampered with during downloading too.

I had the same problem but I manage to fix it.

Just make a Repair Disk Permission using Disk Utility, after that it will install fine in your Mac.

It work for me.

I guess we have to wait. I got this email from mac rep.

"

Hello XXXXXX,

Thank you for contacting iTunes and Mac App Store Support. This is John and I am pleased to assist you today. I'm sorry to hear that you are having difficulty installing OS X Mountain Lion. I know you must be eager to get this done. I will be happy to assist you with this issue.

This appears to be a temporary issue which can be resolved by re-installing the OS within 12-24 hours.

I appreciate your patience and understanding.

Sincerely,

John"

How can you contact them?

Now, I can downloading the OS X Mountain Lion after I revert to use my default dns from Google DNS (8.8.8.8).

It has resolved.

If you are setting Google DNS, please try to use your default dns.