Odd translucent bending line top of Sony vegas 12

Hi guys. I a using Vegas 12. I have just noticed this but for some reason there seems to be a weird translucent line at the top of the footage when I watch it in Vegas. It is not in my master file but when i load them in Vegas, like I said there is a translucent like at the top.
This weird line cases things to bend(only at the top) when the camera moves or when some one moves past it.

When I managed to render it down It is still there but not at bad but it bugs me. Anyone know what this is or how I can get rid of it?
 
Back
Top