I published the version that was only compatible with L4D2 maps. Meaning, if you used the mod with L4D1 characters, it'd act like my previous work (No Special Infected series). This version I made a few minor changes that aren't noticable, but most importantly, L4D1 characters are now affected by the infection...

When I released that version, I realized this shortly after starting to beta test it and well, needless to say, I got really angry that the game didn't work with the L4D1 characters, but then knew that it only affected the L4D2 characters when I went to play my Mutation, No Special Infected 2 and chose the wrong one. Oh well, at least I figured out the problem. So basically, if I hadn't made a stupid mistake, I wouldn't have looked at what code was released... So I guess what I'm saying is, you're welcome for my error.