Help - using Vegas 5 and suddenly applied video effects stopped working. I am doing the same thing I have always done in the past, but I can apply fx til the cows come home, but nothing is changing in the preview. I'm not a pro, but I'm not a newbie either and have been using Vegas for over a year now, so I can't figure out what I may have changed to cause the fx to stop working. I have rebooted already, so I've eliminated that number one trouble shooting solution. I'm selecting fx and applying extreme amounts to make sure I'll see an effect, but nothing. I am applying from the event, the track - different tracks, old projects where the fx worked in the past - nothing! Please help if you can!!

Thanks!