UT - Updated OpenGL Driver (Windows) file

Thanks but you have not said which version this is or where you got it.
Is it the current renderer or the old 1 from 2008 ?

Oh, well that will be an old renderer from something like the 451b update or earlier.
Chris Dohnal took over the updates until 2008, since then the updates come from OldUnreal (and there will be more updates soon).
The new renderers have version numbers so help to avoid mistakes.

Continuing to call an old file an update is not very useful, if in fact it is a downgrade from the majority of existing renderers.
Thanks for making it clearer in the description though, but could you add that newer renderers are available and still developed.

The newest renderers are distributed here www.oldunreal.com/utpatches.html
Oldest at the top, newest at the bottom.

The official support thread is here www.oldunreal.com/cgi-bin/yabb2/YaBB.pl?board=2
Bugs and requests can be submitted there.