You need to change a line of code in the file NpcTypes.h
You prolly have a smaller number like this*
Code:
#define MMF_MAX_NPCTYPE_ID 10000
change it to somthing along the lines of
Code:
#define MMF_MAX_NPCTYPE_ID 400000
then recompile.
*Number in the first code might be off! It's just an example.
*Edit* After reading sotonin's post not sure if this will work but worth a try. Who knows maybe he has an older version of the client... or is that login server no longer around either?