Garageband Could Not Find Application Bundle?

Every time I open up garageband I get a message popping up that says "Could not find application bundle" what does this mean? And how can I get rid of it because it is very annoying. I tried trashing all the garageband preferences and everything and reinstalling but it is still there.

Application Bundles

Do you have GarageBand.app installed in your Apps folder? If so can you right-click it and select "Show Package Contents" from the contextual menu? Tell me what you see next ...

Ok in the contents I have...

CodeResources
Frameworks
Info.plist
MacOS
MIDI Device Plug-ins
PkgInfo
PlugIns
Resources
version.plist

Do you have another user acct you can log into to test out whether this problem is System wide? You may need to create on in System Prefs and you'll need to know the Admin password