Garage Band Additional Content Download

Question

Hi there,
I know this type of things has been around on the forums but I haven't been able to find an answer as yet.
Having upgraded recently to Mavericks and therefore GarageBand 10, I bought and downloaded the 'Additional Content' package, however, even after it says it's downloaded it and installed it successfully, it still continues to try and download it again.
I've been just letting it do it's thing whilst at work (using their internet as the content is 10g a time!) and it always says it's successfully downloaded and installed the content. Indeed, it's all there and working in GarageBand - I'm actually using it. However, it still wants to download it over and over again.
It somehow stoped trying a while back but then one time I accidently clicked 'Restore Purchase' in the GarageBand menu and it started it off again - endlessly downloading - or trying to - additional content.
I read somewhere that there is an issue with some of the new iLife-related software not recognising when it's downloaded all the stuff. So, I guess, if that's the problem here, I just need to find a way to cancel the download. There's no 'cancel' function anywhere though. I've tried disconnecting the internet, but it keeps trying again next time you open GarageBand. I guess I'm hoping someonw may have some sort of fix where you delete a certain preference or file that keeps looking for the download or something.
Hope someone can help.
Chris

Answer 1

I read somewhere that there is an issue with some of the new iLife-related software not recognising when it's downloaded all the stuff. So, I guess, if that's the problem here, I just need to find a way to cancel the download. There's no 'cancel' function anywhere though. I've tried disconnecting the internet, but it keeps trying again next time you open GarageBand. I guess I'm hoping someonw may have some sort of fix where you delete a certain preference or file that keeps looking for the download or something.
Three things to try: 
Resume the download during the night, when there is less traffic:  Mac App Store: How to resume interrupted downloads
Reset the App Store from the Debug menu, so it will forget the extra download. See Old Toad's post here on how to enable the "Debug" menu:  Re: iPhoto update 'paused'
After a long search and checking the machine (verifying keychain certs and a lot of other stuff), I discovered the following:
The App Store app has a debug menu that may be turned on via:
defaults write com.apple.appstore ShowDebugMenu -bool true
in Terminal.app.
The 'Reset Application' debug menu option solved my problem. Maybe this will help someone else.