Since GB seems to work flawlessly In the new User Account – in particular the Glossary works – can I assume that the apparently 'missing' Glossary file in the original account is definitely not the fault of GarageBand?
So far, my thoughts are that neither the OS nor GB are at fault. I don't know if this is a reasonable assumption.
you can delete both of them. GB simply creates new ones. the .cs file is only used for control surfaces, so you usually don't need to bother with it unless you have an iControl or an apogee gio.
I'm not sure what exactly your problem is though - you can't get the Learn to Play glossary to come up? Or something else?
Well, we had GB '09 and then upgraded to GB '11. The prospect of the lessons and the feedback where you can see your skills improving (or not) was a big deciding factor.
It's my wife who uses it. She found that when she tried to get the Glossary (accessed via the Glossary tab when using a lesson) what was returned was a blank white screen with the message: 'File not found' in the top left corner. I set up another account, and everything worked fine there. She got the full Glossary while working on a lesson.
I tried to sift through the contents of the ~/Library/Preferences folder, testing each file one at a time, by removing it to the Desktop, and restarting. If there was no difference, with the newly created pref file, I replaced it with the original. I am assuming I was carrying out the appropriate steps. It was very time-consuming, and I wasn't able to find the file that might have been doing the damage.
It's sort of niggling away at me and has become a personal crusade to isolate the problem.
Here's a thought.
Try going into the Admin Account (I'm assuming you have an Admin Account plus your main Account). Temporarily turn off Admin privilages in your main account). Re-install GB. I'm wondering whether you might at this point get a prompt asking you if you want to make GB available to all Accounts. If you do get such a prompt, say Yes.
Once reinstalled, try GB again to see if the Glossary is still enabled in your Admin Account. Then open GB in your main account and check the Glossary again.
Re-enable Admin priviledges in your Main account again - if you wish to.