Originally Posted by kovidgoyal
you've got a corrupted install, probably because you're mixing two version of calibre one from the repo and the binary. Did you properly uninstall the old version before installing the new?
No. If I uninstall everything now will I lose my preferences/database and the like? I don't want to lose my preferences because I just spent two hours or so going through the collection and making sure everything is formatted correctly. Thank you so much for the excellent software and the support you give the users.