Hello,
I'm using Vegas Movie Studio Platinum 9.0a (Build 85) and I'm unable to render AVCHD files at 1920x1080 without Vegas crashing (with no explanation). I can render fine in 1440x1080, but the loss in resolution is apparent.
The camera I'm using is a Sony HDR-CX11e, and it doesn't seem to matter which files I use to render, it all crashes equally.