Client crash when entering some zones

[Drawde]

This is an odd bug which may be related to my DB (maybe caused by too many NPCs at the safe point?). It only seems to occur in underground/dungeon zones.
Basically when entering some zones either via #zone or a zone point, the EQ client will crash to desktop. The world and zone servers remain OK with no error messages than "client disconnected" and you can start EQ up again and reconnect to the server. Entering the world with the character in the "bad zone" will crash the client again however; the only way to recover the character is to use #movechar.

Zones I've found to have this problem are Neriak Commons, Solusek's Eye, Nagafen's Lair, Qeynos Aqueduct and City of Mist - probably more but I haven't tried them. The crashing is consistent - it happens whenever I enter these zones, with any character.

Strangely I created a Dark Elf magician and started in the Spurned guildhall in neriakb OK - it was only when I left the zone and tried to return that it crashed. So the problem is presumably related to zoning.