Why do I always have to rebuild the desktop?
 

After a lot of trouble getting SD set up and running (most of which later turned out to be due to a buggy FW external drive) it is working well now and I am quite pleased with it.

Only thing is, just about every time I back up my HD with SD, I have to rebuild the desktop on the clone before it will work properly. I can't help but wonder why this should be necessary - if the clone is an exact clone, shouldn't it work just like the original?

This is the OS9/Classic desktop, Kyle? We consciously force the rebuild of that, since it's necessary when moving drive to drive.