Same with me. Cannot render (using 32bit or 64bit versions). Not a plugin issue, as I have no plugins other than the Sony EQ that comes with Vegas. cannot render. Crashes during render of audio file. Simple session: music edit, 1 stereo track only . Can I revert to prior 'build' or do I need to uninstall Vegas and reinstall the prior build? Oy.
For the first time since the 511 update I was able to render audio. I disabled ALL midi in the preferences, which includes my Mackie Control, and closed and re-opened Vegas. Render worked.