I keep having the same problem evan after reinstalls of Vegas 6 , this has happened on pretty much ver. b and still on 6c.
If I have the external preview on, using my second monitor.
And if the auto preview function is on in either the explorer window or the project media window. The clips shows for a brief moment, stops and in most cases ends up in Vegas locking up. Only able to shut down via task manager.
Its killing me in time. I have to make sure that I exit external preview everytime.
Does anyone else experience this or somthing similar?