problem with ITunes lib created on XP

[Larz]

My ITunes library was created in XP and I have it stored on an
external USB drive, now that I have a vista machine. When I try to
sync it, I get messages to the effect that my computer is not ITunes
authorized even though it really is and it says it can't copy all of
the files over.

 

[Richard G. Harper]

What does Apple have to say on this subject? You can't just move an ITunes
library around, there are specific processes to back
up/restore/export/import a library from one computer to another.