I have followed the Parallels kb and was able to start the Win 10 download. The download itself proceeded normally to completion. Then a second process started, something about windows media creation. On two occasions this morning approximately half way through this second process I got a message "something happened". At that point the only option offered was "Close". When I closed, I had apparently lost everything. I went to the explorer download folder and there is no trace of a download (I did the download with internet explorer). I was watching the computer screen ( Macbook Pro Retina) and there was no power interruption or other untoward event. I am upgrading Win 8.1 (64). I did increase the memory to 2 gig. My parallels is the most recent and tools is updated to latest.
