I have installed version 0.4.67. calibre comes up and shows my library and allows me to add books and remove books. But if I click the Configurator or Convert E-books icons, calibre crashes. The error messages asys the error is in qtgui4.dll. I close the error dialog and calibre closes.
I had an earlier version on my PC but had let it get old since I was using calibre on my Mac where it works great. I uninstalled the old version of libprs500 nad installed the new version of calibre (0.4.56). At that point I started having trouble on my PC.
Any help?