I uploaded a new wowmod.zip - fixed the index out of range error and removed the .ztmp files.
I felt it best to recommend running wowmod.amxx in debug mode because it is comprised of 15,000+ lines of code and I'm sure there are more bugs that need discovering/fixing - people won't be able to help report bugs in a helpful way unless debug is turned on. I modified the instructions in the INSTALL file to make this more clear.