My Calibre just says 2.0, nothing more. Okay, I'm afraid I don't know what Qt5 is. I only use Calibre to convert some books from one format to another and occasionally that plugin of which we will not speak if I have a library book that will expire before I can finish it.
So how would I uninstall 2.0 to install 1.48? I don't see an uninstall. If I use Windows Add Remove Programs, are you sure it won't remove everything? I'd rather not take the chance unless 2.0 starts crashing or something.
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