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Mac app store "an error has occurred" and greyed out button for download

I'm trying to download an app in the mac app store.


It's got stuck and nothing seems to get it going again.


I get "an error has occurred" and the button along side is grey.


If I click the button it does a little animated click and nothing happenes.


Any idea how to resolve this?


User uploaded file

Mac OS X (10.6.8), 4Gb Ram

Posted on Nov 5, 2012 7:36 AM

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Question marked as Top-ranking reply

Posted on Nov 5, 2012 5:22 PM

I'm curious, can you make a new user account, and try to do this through there?

9 replies

Nov 7, 2012 3:08 AM in response to HACKINT0SH

Can't believe this is so "hidden"


So this is what I did thanks to Hakintosh.


1. Followed this link.http://support.apple.com/kb/HT4928

2. In the mac app store I dropped down the menu from the top bar "store"

3. Logged out

4 Logged in

5. Went to view my account - under store

6. Found the unhide purchace button.

7. Clicked that

8. Went back to purchaces - Button had changed but error text was still there.

9. Went to Store ~ Check for unfinished downloads.

10. It gave me the option to resume


Thanks again.


This should not be so difficult to work out.

Nov 19, 2013 2:44 PM in response to BenLeeke

I had a similar issue which I couldn't install completely the iWork and update iLife. It stops installing in Launcher and says error occurred. I tried removing AppStore cache , the above solution above . All didn't work.


The funny thing was when I logged out of AppStore, and clock install. It worked! Although I had to repeat the process for each app.

Apr 7, 2014 8:01 AM in response to BenLeeke

Run Console to check the recent logs for more details (look for com.apple.installd).


In example, I had something like:

com.apple.launchd[1]: (com.apple.installd[69518]) Job appears to have crashed: Abort trap: 6

ReportCrash[69520]: Saved crash report for installd[69518] version 332 to /Library/Logs/DiagnosticReports/installd_2014*.crash


And when checked backtrace under System Diagnostic Reports, there is something like:

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[NSKeyedUnarchiver initForReadingWithData:]: incomprehensible archive


So it's possible that update files were corrupted. Try to remove these files and re-try again.

See: https://discussions.apple.com/thread/4234582


From Terminal check if you've temporary files here:


ls -la /private/var/folders/*/*/*/com.apple.appstore


And then try to remove them (you may backup them first just in case):


rm -frv /private/var/folders/*/*/*/com.apple.appstore


Or eventually run Finder and go to: /private/var/folders and Trash all the folders (if something bad happens, restore it from your Trash).


And re-try again.


Removing all the folders from /private/var/folders it actually fixed the problem on my laptop.

Mac app store "an error has occurred" and greyed out button for download

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