I just got a new camera. I dragged the AVCHD files into vegas done a nice edit and it wont render it keeps freezing at different points depending on the render settings from avi, wmv, mpeg none of them will render

I have an i7 920 and 6gb ram so my specs are fine. Im just trying to get this AVCHD edited footage down to SD to fit on a disc, whats the easiest way. I was going to do it to wmv and burn it but it just wont render.

Vegas is uptodate and the edited footage is 31 minuites long. I have over 400GB free. The footage is on HDD1 and the software is on HDD2 if that matters.

Any ideas