Grazie has some posts about this here in the forum - it seems that (for some users) closing Vegas by clicking the red X in the upper right corner sometimes leads to this error while closing Vegas by using the menu File and Close does not.
Could you please check on your machines?
BTW: On my machine Vegas 11 always ends normally by pressing the red X. Strange!
today happened 2 times, now remembering back, i believe this problem showed up after i installed canopus codecs and cedocida DV codec (using this one instead internal dv codec)
if is the codecs, likely to be cedocida (i use canopus codecs for a long time)
the problems is that does not happen every time, so will take a long time to "diagnose"...
I'm using Vegas Pro 64 bit and have had the EXIT error - "Program not responding".
It seemed to me, I would get this error after applying OFX and other VFX plugins.
I changed the UAC to it's lowest setting and have not had this error for a few months.
I always close Vegas using MENU-EXIT.
Changing the UAC might help other Vegas users.
I get the crash with the Red X as well as closing from the file menu. I have noticed the crash does not occur when I have not edited a file. For example, I open a file, view it and play it, but make no edits.
I've noticed I can add media, FX, and transitions that are not GPU enable, save, and close with the Red X and no crash occurs. But if I use any FX or transitions that hint at GPU enabled, save, and close with the Red X, then I get the error message. I've tested this by creating a .veg file and incrementally adding media, saving, closing, reopening, adding FX, etc.
I'm able to use all my NewBlue stuff without any crashes upon close as long as I don't select "upgrade" on the GPU enabled feature.
I am able to use NewBlue Titler Pro without problems (runs slow on my old machine) and I can successfully render. Okay here is the weird part with NewBlue Titler Pro. Before the Windows update yesterday, this plug-in caused a crash 100% of the time. Post Windows update, I can save and close with the Red X and sometimes to often I get the crash, but sometimes not. My error messages point to nvogl32.dll in the System32 folder of Windows.
I have a theory that if you uncheck the box that tells Vegas to automatically open the last file edited, this somehow minimizes the crash upon closing. I cannot really explain why so this is just a theory.
Running in the compatibility mode and closing via the file menu does not make a difference for me.
I have some available time for testing right now so would love to help identify a workaround on this.