Quote:
Originally Posted by tonyt
Hi
I am currently using Mac OSX 10.8 on a G4 Power PC with Caliber 5.14.
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Mac OS X is only up to version 10.6, and it won't work on a PPC machine. I think you made a typo.
I've never had any problems with my books living though an ugrade or either Calibre or Mac OS X. But it wouldn't hurt to have a backup.