Current project = Widescreen
Using V5d

Was pre-rendering different sections when suddenly, with the Good setting, the pre-rendered sections were being stretched with black bars appearing at the top and bottom. If I made a small change and played from the time-line before pre-rendering all worked as before, but pre-rendering gain caused the same probloem.

I attempted to pre-render to the Preview setting. This time the video was squashed (left to right) but no black bars either side.

I opened another instance of Vegas and the same happened.

Then, just as sudden as it started it reverted back to how it should pre-render. I had not made any other changes apart from mentioned above.

Does any one have any idea why this should happen?

Cheers