I have had my new Vista machine for about 3 or 4 months and I love it, but a problem has just presented itself. I do a lot of digital video editing using MM6 and it has been working fine until just recently. Now it will play a clip I import the first time but will stop working if I move the slider up the timeline or try to restart the clip. The application itself will very occasionally stop but usually it just refuses to restart the clip. I have reloaded the OS with no luck and the registry hack that MS Knowledge Base suggests to fix the problem doesn't work. Has anyone experienced this? Better, has anyone any ideas for a fix?