Where are the instrument icon files located?
GarageBand 10, OS X Yosemite (10.10.3)
GarageBand 10, OS X Yosemite (10.10.3)
In GarageBand '11 these icons were readily accessible in the application bundle. Just ctrl-click the GarageBand application, select "Show Package Contents", and then open the folder Resources" inside.
You'll see plenty of .tiff files with the icons of the instruments.
That is different in GarageBand 10. The instrument icons are not directly visible as tiff files. They must be hidden in one of the .nib files inside the package and these cannot be opened.
Take screenshots of the icons you want to use. Or extract them from GarageBand '11, if you still have a version in one of your backups.
Where are the instrument icon files located?