We are running Garageband '08 on an eMac with 512MB of RAM, with OS X 10.4.10.

For some users, the program will not appear on screen, even when there is a black triangle under the Garageband logo on the dock.

For some other users, the program appears on screen but none of the controls will work - not even the red/yellow/green dots at the top left of the window. The only way to close the program is to force it to quit.

We have tried correcting the permissions using Disk Utility and deleting the plist files, but the problem won't go away. Is there another solution?