Just reporting this, I don't know if it means anything in particular...
I fell asleep with the laptop in my lap. When I awoke this morning I was greeted by the following dialog box:
Alert: gluBuild2DMipmaps failed
When I clicked OK it was followed by:
Alert: 1285
When I clicked on this one, QB64 closed.
When I restarted, it asked if I wanted to recover from autosave, which I didn't as it was unnecessary. I had saved all my changes.
I don't recall if I was running the application when I lost consciousness, but it wasn't running when I awoke.
Perhaps my snoring irritated it. ;)
EDIT: After googling this, I gather it is associated with OpenGL, which I am NOT using in anything I do.