ACE False Positive- Old Unreal Multimedia Update for Unreal Tournament
http://ompldr.org/vZXpwZQ
Apparently ACE (understandably) dislikes any non-default files for UT99. Unfortunately, some of these files are actually improvements for those with modern hardware and not actually cheats used to give players advantages. In this case it seems to have an issue with my OpenAL sound driver which is enabled through the use of Old Unreal Multimedia Update for Unreal Tournament (see link below). Anyway, for the sake of my game not sounding like mud, I'd like to suggest that this gets white-listed.
http://www.oldunreal.com/utpatches.html