This is the thread I was sent: http://sourceforge.net/projects/fomm/forums/forum/999686/topic/3768596
kaburke seems to know what's going on and indicated he'd pass the information along.
Thank you for this information.
Yesterday I made some tests myself, Only MMM and FWE (which shared the same script) experienced this issues, all other mods worked just fine for now
Thanks for the link, showler. I did some digging, and ended up finding http://www.gamesas.com/index.php?/topic/1096923-relz-arwens-realism-tweaks-thread-no8/page__view__findpost__p__16160056 by kaburke. It seems that some improvements for FOMM 0.12.x caused a change in the representation of file names, causing the function MeasureText to edit the saved file name instead of a temporary variable. Fortunately, the fix is simple: Change the line
string temp = file.Replace(Path.AltDirectorySeparatorChar, Path.DirectorySeparatorChar);
to
string temp = String.Copy(file.Replace(Path.AltDirectorySeparatorChar, Path.DirectorySeparatorChar));
That one would have taken me ages to track down!
Edit: The edit mentioned above needs to be performed in two places, line 700 and 727. After some quick testing, I can verify that Crows gun is now visible!