Hi Folks- I'm a long time user of VPX. I've recently installed the latest version. Since the update, when I import ( copy) an MP4 file onto the timeline ,it does not show in the program monitor on playback. Black screen only. Nor does the timeline show thumbnails. The audio does play, but I see only a black screen on the program monitor. There was an update pushed out today and I was hoping this would resolve the problem, but it didn't. I have also reinstalled the software.So, something has gone wrong between the previous version and the release of the current. On a side note.. I've been using the trial version of Vegas and it's working flawlessly. Any suggestions to help fix this would be greatly appreciated. Thanks in advance