My vegas 10e was crash happy, especially trying to render avi files. I changed dynamic ram fro 350 to 16. It's more stable now. What setting are you guys using?
Mine:
50Mb for rendering fastest and general use, 2000 or more for previewing with shift B preview if i need it.
Note, as dissussed in other threads, this value can change wildly depending on your system. Much debate about 'whats best' and there is no definate answer. So you may need to experiment on your system and find your best value/s.
Rendering and previewing are optimised with totally different RAM values. Find yours.