Make sure that the numbers in OBJ_VNUM_CORPSE_PC and OBJ_VNUM_CORPSE_NPC refer to actual objects. And while you're at it, you might wanna make sure that all of the other vnums defined in merc.h point to real objects and rooms.
> Thu Jan 03 14:59:03 2002 :: ROM is ready to rock on port 4000. > Thu Jan 03 14:59:42 2002 :: Sock.sinaddr: 127.0.0.1 > Thu Jan 03 14:59:49 2002 :: Loading Jdraconis. > Thu Jan 03 14:59:49 2002 :: [*****] BUG: Fread_char: no match. > Thu Jan 03 14:59:51 2002 :: [EMAIL PROTECTED] has connected. > Thu Jan 03 15:00:21 2002 :: [*****] BUG: Create_object: NULL pObjIndex.

