Twice now I have had this right click problem. When I tried to right click a folder in windows explorer it would immediately bring up an error message that windows explorer has stopped working, restart, or look for solutions online, etc. After going through a lot of forums, trying their solutions to no avail, I finally boiled it down to Mozilla Firefox causing the problem. I uninstalled Firefox and that fixed the problem. When this happened to me a second time I found myself going thru the same steps again but something in the back of my mind kept telling me that I've been here before and I tried to remember what I did the last time. Something in the event logs or task manager pointed it that direction and I just uninstalled firefox, problem solved.