I have a Mac that is running 10.5.8 software. On the Calibre site its telling me to download calibre version 1.48.0 but its not working and I put it in the folder the instructions say to. But the computer won't let me install it.I think the problem is my processor it is 1.8 GHz PowerPC G5. Anyway is there a version at all I can install on this old computer?
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