Having the same trouble…
I’m on Windows Vista with a brand new video card.
Been using Vegas Pro 11 on this computer for months. Never any rendering trouble.
Suddenly, this week, I can’t complete a HD render in any format just becuase of the simple Sony “Flash” plugin. (not a third party plugin) That’s where the render would stop, freeze and crash.
When is Sony Vegas Pro ever going to get it right? When will they ever come out with smooth rendering software?
-Fiesta Design & Ane Driod