Originally Posted by Ortep
I have the feeling that the problem isn't in the gui but in mobiperl. But I'm not sure of that
You can probably test that by doing "mobi2mobi --savecover cover --savethumb thumb file.mobi" and see if the cover and thunb files are saved. They will only be saved if the file is a real MobiPocket file where the cover and thumb has been set in the correct way.