Baldnerd

Just to add my own experience to this issue, I'm a video content creator and have many card readers and drives connected to my computer. The X: drive turns out to be one of my many SD card readers. So if a SD card is not present in that drive, Cura crashes. I couldn't figure it out at first and kinda gave up thinking I'd get around to reinstalling or something, but then needed Cura today for a project. So, thanks to @ahoeben for drawing my attention to the drive letter as the source of the problem. Sure enough, removing that card reader results in Cura working again.