I spent 2 days trying to work out why my Video fx were seemingly not doing anything because the preview window showed nothing.
I figured it was something really simple but nowhere in the Vegas manual did I find a warning to ensure the split screen button must be off to view fx changes as you make them….. grrrrrrr
thankfully Duane had the very same issue and I found this thread with a google search.
To be honest I think changing the colour of buttons more clearly to show when they are on/off
Cheers Steve