@dcrjsnider - not the foggiest about your issue sorry. No-one else is reporting issues. I'm guessing you fall into the very small but unfortunate minority who have been having crashing issues with calibre since a while ago. You don't say anything about your OS etc but honestly I wouldn't have anything to suggest to you. I suggest you go hunting in the main forums about calibre crashes specific to your OS, and verify whether you can find other ways to crash calibre that don't involve this specific plugin.
@JSWolf - what drugs are you on? You can have a picture of whatever you like, I don't include any images with this plugin.
@JimmXinu - I think you picked the wrong plugin, as this plugin doesn't use that code.
It is however in a file that gets shared with various other plugins and those that have that latest version of it will indeed have that bug which I will fix for their next release, thanks.
@DMee - it took me a while to figure out what you meant, some random clicking I think found it. I presume you mean the right-click menu that happens to exist on the generated cover image on the right side of the dialog? That menu came "for free" because I reused a calibre widget, I hadn't even realised it did that. It really shouldn't (nor should it support drag/drop onto that panel either), so I will replace it with something more basic sometime...