CTD

Hi, I got a ctd, everytime i select a special unit in a custom battle- here is the logfile:

00:05:26.695 [system.rpt] [always] CPU: SSE2
00:05:26.697 [system.rpt] [always] ==== system log start, build date: Jun 25 2007 version bld-medieval2-update2.1-30 (43169) ===
00:05:26.703 [system.io] [always] mounted pack packs/data_0.pack
00:05:26.704 [system.io] [always] mounted pack packs/data_1.pack
00:05:26.706 [system.io] [always] mounted pack packs/data_2.pack
00:05:26.708 [system.io] [always] mounted pack packs/data_3.pack
00:05:26.709 [system.io] [always] mounted pack packs/data_4.pack
00:05:26.709 [system.io] [always] mounted pack packs/localized.pack
00:05:29.670 [data.missing] [warning] missing/invalid cursor for ANISELECT
00:05:29.674 [data.missing] [warning] missing/invalid cursor for MODIFIER_SABOTAGE
00:05:29.679 [data.missing] [warning] missing/invalid cursor for MODIFIER_TRADE
00:05:29.696 [data.missing] [warning] missing/invalid cursor for DRAGGABLE
00:05:29.696 [data.missing] [warning] missing/invalid cursor for DRAGGING
00:05:29.704 [data.missing] [warning] missing/invalid cursor for MODIFIER_MULTIPLE_SELECT
00:05:29.704 [data.missing] [warning] missing/invalid cursor for MODIFIER_ATTACK
00:05:29.704 [data.missing] [warning] missing/invalid cursor for MODIFIER_PLACE_CHARACTER
00:05:29.704 [data.missing] [warning] missing/invalid cursor for MODIFIER_PLACE_RESOURCE
00:05:29.704 [data.missing] [warning] missing/invalid cursor for MODIFIER_PLACE_FORT
00:05:29.704 [data.missing] [warning] missing/invalid cursor for MODIFIER_MOVE_OBJECT
00:05:29.704 [data.missing] [warning] missing/invalid cursor for MODIFIER_PLACE_WATCHTOWER
00:05:29.705 [data.missing] [warning] missing/invalid cursor for MODIFIER_DEPLOYMENT_AREA
00:05:29.705 [data.missing] [warning] missing/invalid cursor for MODIFIER_PLACE_TILE
00:05:29.705 [data.missing] [warning] missing/invalid cursor for MODIFIER_PLACE_SPECIAL_PIECE
00:05:29.705 [data.missing] [warning] missing/invalid cursor for MODIFIER_PAINT
00:05:29.705 [data.missing] [warning] missing/invalid cursor for MODIFIER_ADJUST_HEIGHTS
00:05:29.705 [data.missing] [warning] missing/invalid cursor for MODIFIER_ADD_UNIT
00:05:29.705 [data.missing] [warning] missing/invalid cursor for MODIFIER_PLACE_SETTLEMENT
00:05:31.360 [data.invalid] [error] Target building level not allowed: Scotland, castle -> large_town, castle_barracks[2](barracks) -> barracks[2](militia_barracks)
00:05:31.360 [data.invalid] [error] Target building level not allowed: Scotland, fortress -> city, castle_barracks[2](barracks) -> barracks[2](militia_barracks)
00:05:31.360 [data.invalid] [error] Target building level not allowed: Scotland, fortress -> city, castle_barracks[3](armoury) -> barracks[3](army_barracks)
00:05:31.361 [data.invalid] [error] Target building level not allowed: Scotland, citadel -> city, castle_barracks[2](barracks) -> barracks[2](militia_barracks)
00:05:31.361 [data.invalid] [error] Target building level not allowed: Scotland, citadel -> city, castle_barracks[3](armoury) -> barracks[3](army_barracks)
00:05:31.361 [data.invalid] [error] Target building level not allowed: The Byzantine Empire, fortress -> city, castle_barracks[3](armoury) -> barracks[3](army_barracks)
00:05:31.362 [data.invalid] [error] Target building level not allowed: The Byzantine Empire, citadel -> city, castle_barracks[3](armoury) -> barracks[3](army_barracks)
00:05:31.364 [data.invalid] [error] Target building level not allowed: Hungary, fortress -> city, castle_barracks[3](armoury) -> barracks[3](army_barracks)
00:05:31.364 [data.invalid] [error] Target building level not allowed: Hungary, citadel -> city, castle_barracks[3](armoury) -> barracks[3](army_barracks)
00:05:31.365 [data.invalid] [error] Target building level not allowed: The Mongols, wooden_castle -> town, castle_barracks[1](drill_square) -> barracks[1](militia_drill_square)
00:05:31.365 [data.invalid] [error] Target building level not allowed: The Mongols, castle -> large_town, castle_barracks[1](drill_square) -> barracks[1](militia_drill_square)
00:05:31.365 [data.invalid] [error] Target building level not allowed: The Mongols, castle -> large_town, castle_barracks[2](barracks) -> barracks[2](militia_barracks)
00:05:31.365 [data.invalid] [error] Target building level not allowed: The Mongols, fortress -> city, castle_barracks[1](drill_square) -> barracks[1](militia_drill_square)
00:05:31.365 [data.invalid] [error] Target building level not allowed: The Mongols, fortress -> city, castle_barracks[2](barracks) -> barracks[2](militia_barracks)
00:05:31.366 [data.invalid] [error] Target building level not allowed: The Mongols, citadel -> city, castle_barracks[1](drill_square) -> barracks[1](militia_drill_square)
00:05:31.366 [data.invalid] [error] Target building level not allowed: The Mongols, citadel -> city, castle_barracks[2](barracks) -> barracks[2](militia_barracks)
00:05:31.366 [data.invalid] [error] Target building level not allowed: Normans, wooden_castle -> town, castle_barracks[1](drill_square) -> barracks[1](militia_drill_square)
00:05:31.367 [data.invalid] [error] Target building level not allowed: Normans, castle -> large_town, castle_barracks[1](drill_square) -> barracks[1](militia_drill_square)
00:05:31.367 [data.invalid] [error] Target building level not allowed: Normans, fortress -> city, castle_barracks[1](drill_square) -> barracks[1](militia_drill_square)
00:05:31.367 [data.invalid] [error] Target building level not allowed: Normans, citadel -> city, castle_barracks[1](drill_square) -> barracks[1](militia_drill_square)
00:05:31.367 [data.invalid] [error] Target building level not allowed: Saxons, wooden_castle -> town, castle_barracks[1](drill_square) -> barracks[1](militia_drill_square)
00:05:31.367 [data.invalid] [error] Target building level not allowed: Saxons, castle -> large_town, castle_barracks[1](drill_square) -> barracks[1](militia_drill_square)
00:05:31.368 [data.invalid] [error] Target building level not allowed: Saxons, fortress -> city, castle_barracks[1](drill_square) -> barracks[1](militia_drill_square)
00:05:31.368 [data.invalid] [error] Target building level not allowed: Saxons, citadel -> city, castle_barracks[1](drill_square) -> barracks[1](militia_drill_square)
00:06:12.986 [system.rpt] [error] Medieval 2: Total War encountered an unspecified error and will now exit.


what can I do against this?