Oh damn... my program to copy files from my smartphone to PC was running happily so I went and had dinner. Coming back, expecting it to have finished, I found that just over halfway it had ran into this strange error, see image. I'm not using COM or threading in my code (but could be the MediaDevices interface does so). The option "Continue" does not help, the error comes straight back again. I just wanted to see if anyone had ever experienced this ?