Q: I tried to update my OS (Mountain lion) to mavericks, but i can't seem to download. There's a 'an error has occurred' in red besid ... more
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Oct 23, 2013 9:45 PMby Carolyn Samit,You're sure your Mac meets Mavericks requirements ? OS X Mavericks: System Requirements
If your Mac can run Mavericks, restart your Mac and try again.
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Dec 28, 2013 10:34 AMby mike9462,It's possible something has become corrupted in your AppStore cache folder. I had the same problem that occurred after I did a partial download, paused it, and attempted to restart it again later. Here's how I fixed my problem:
Enable AppStore Debug menu:
1. Quit AppStore completely.
2. Run Terminal and enter the following on the command line: defaults write com.apple.appstore ShowDebugMenu -bool true
3. Restart the AppStore. You should see a new menu called "Debug".
Clear the download cache:
4. In AppStore, select Debug menu / Show Download Folder
5. Quit AppStore completely, but leave download folder open
6. In the download folder, select all files/folders, then delete them.
7. Restart AppStore. You may need to sign in to your Apple account again.
You may need to restart your computer to be able to delete the files from the trash.
You can then try the download again.
