Crash when using portal to town.

Seems that I get a crash fairly often when using portal to a town (not hideout). It also seems to be the most common crash i get, about 90% of all are this one.

text copied from log: [INFO Client 2684] Could not load room "Metadata/Terrain/Act3/Town/Rooms/city_town.arm", reason: "Metadata/Terrain/Act3/Town/Rooms/city_town.arm": Failed to load doodad "Metadata/NPC/Missions/StrDex": "Metadata/NPC/Missions/StrDex.ao": Unable to MapViewOfFile in MapChunk. Error Code: 8 Offset: 5842599936 Size: 10283230
Failed to load doodad "Metadata/NPC/Missions/DexInt": "Metadata/NPC/Missions/DexInt.ao": Unable to MapViewOfFile in MapChunk. Error Code: 8 Offset: 5825822720 Size: 10186975