User32.dll

Hi.
When running a script which calls VirtualDub to convert some large video files (20 - 60 GB), VirtualDub crashes halfway through the encode and blames "user32.dll" in its error message.

Now this doesn't happen on machines which don't have DOpus installed, which makes me sad, for I wanted to put DOpus on many more machines.

Any idea what is happening and how to avoid it?

Thx

Why do you think VirtualDub crashing within a Windows DLL has anything to do with Opus?

It's almost certainly just a coincidence that this happens on the machine you have Opus on as well. That is surely not the only difference between your machines.