Broken Crusades Campaign Unpacker?

You'll have to forgive me if I'm overlooking something obvious - been away from this for quite a while, heh.

I just got Kingdoms, and decided the change some of the unit stats before I even played it. So I went into the tools folder to use the new unpakcers....only to find that every single unpacker worked just fine - except the one I wanted! For some reason the Crusades campaign unpacker starts to unpack, then quits a couple seconds into the process. The other three campaigns unpacked just fine. I haven't edited anything with the expansion stuff, though I did edit the regular game's export_unit.txt many long moons ago. Can anyone tell me why this is happening?