It is likely neither nexus nor a missing file otherwise I think you would have been able to understand the error message, and need not post here.
When no error message appears it is probably a damaged file, I had the same crash once with a sound file that was crippled. The engine can really crash, without error message when a file is crippled. But you should see in the acklog.txt when it happens.
An additional question:
After reading this the first time, I thought, dumb me, should have thought of this, but thinking over it, I ask:
What sort of setting tells the engine to write an acklog.txt, when I start the published/resourced game?
