I just upgraded from 9.0b to VMS 10.0. I can no longer preview or auto-preview AVCHD (.mts) files from the Explorer window. When I select a file in the Explorer window the sound plays and the frame number counts up, but the video does not play. If I put the file onto the timeline, it will play/preview OK. It is tough to figure out what files to put onto the timeline using just the sound. The same files preview in 9.0b, so I know that VMS can play the files from the Explorer list. Any suggestions for settings that could fix this? Or is this just plain a bug? Thanks.