This is FYI, so you don't waste time searching for other software conflicts. I found that opening Cineform .avi's in Windows Media Player 10 or 11 causes the player to freeze and crash. This happens when jumping around in the WMP timeline, and when opening a clip while another clip is playing. I switched back to AHD 4.21 build 67 and the problem did not occur, but when I reloaded AHD 4.22 build 69 the problem returned. I have filed a trouble ticket.

I've noticed this also.

We noticed that too, so we fixed it in Aspect HD 4.2.3, now available download from www.cineform.com. :)

P.S. The error was only is 4.2.2, earily versions, and now later versions are fine. We were adding some infustructure for upcoming features, and a small bug crept in (now fixed.)

Thanks David, any hints on the "upcoming features" you will be adding? I'm sure we would all like to know.

No hints. Sorry.