I've been having unspecified errors when entering battles, but previously have not had this problem. I have no additional mods installed, and the game has been extremely stable until playing as Middenheim.
Log below.
Spoiler Alert, click show to read:<sitting_around_academic_free_settlement> fired
17:15:37.492 [game.script.trigger] [trace] Trigger <luxurious_lifestyle_sanitation> fired
17:15:37.492 [game.script.trigger] [trace] Trigger <luxurious_lifestyle6> fired
17:15:37.492 [game.script.trigger] [trace] Trigger <selfperpetuating5> fired
17:15:37.492 [game.script.trigger] [trace] Trigger <selfperpetuating26> fired
17:15:37.492 [game.script.trigger] [trace] Trigger <selfperpetuating41> fired
17:15:37.492 [game.script.trigger] [trace] Trigger <loyalty_check7> fired
17:15:37.492 [game.script.trigger] [trace] Trigger <luxurious_lifestyle_sanitation> fired
17:15:37.493 [game.script.trigger] [trace] Trigger <luxurious_lifestyle6> fired
17:15:37.493 [game.script.trigger] [trace] Trigger <luxurious_lifestyle_sanitation> fired
17:15:37.493 [game.script.trigger] [trace] Trigger <luxurious_lifestyle6> fired
17:15:37.493 [game.script.trigger] [trace] Trigger <luxurious_lifestyle_sanitation> fired
17:15:37.493 [game.script.trigger] [trace] Trigger <luxurious_lifestyle6> fired
17:15:37.494 [game.script.trigger] [trace] Trigger <sitting_around_camp_vnv_trigger> fired
17:15:37.494 [game.script.trigger] [trace] Trigger <sitting_around_camp_vnv_trigger> fired
17:15:37.497 [game.script.trigger] [trace] Trigger <0004_Normalise> fired
17:15:37.498 [game.script.trigger] [trace] Trigger <0004_Normalise> fired
17:15:37.498 [game.script.trigger] [trace] Trigger <0004_Normalise> fired
17:15:37.498 [game.script.trigger] [trace] Trigger <0004_Normalise> fired
17:15:37.498 [game.script.trigger] [trace] Trigger <0004_Normalise> fired
17:15:37.500 [game.script.exec] [trace] exec <add_money> at line 25230 in mods/teutonic/data/world/maps/campaign/imperial_campaign/campaign_script.txt
17:15:37.501 [game.script.trigger] [trace] Trigger <0405> fired
17:15:51.132 [data.missing] [warning] Missing unit card data/ui/units/norway/#siege_tower_chaos.tga
17:15:51.133 [data.missing] [warning] Missing unit card data/ui/units/norway/#siege_tower_chaos.tga
17:15:51.133 [data.missing] [warning] Missing unit card data/ui/units/norway/#tortoise_ram_chaos.tga
17:15:58.309 [system.io] [warning] open: mods/teutonic/data/loading_screen/loading_bar.tga.dds is missing
17:15:58.344 [system.io] [warning] open: mods/teutonic/data/loading_screen/loading_logo.tga.dds is missing
17:15:59.426 [system.io] [warning] open: data/sounds/Effect_EVT/flamethrower_start.evt is missing
17:15:59.427 [system.io] [warning] open: data/sounds/Effect_EVT/flamethrower_firing.evt is missing
17:15:59.427 [system.io] [warning] open: data/sounds/Effect_EVT/flamethrower_remains.evt is missing
17:15:59.908 [system.io] [warning] open: data/models_effects/building_fire_glow.cas is missing
17:15:59.908 [system.io] [warning] open: data/models_engine/heavy_onager_torches.cas is missing
17:15:59.970 [system.io] [warning] open: is missing
17:16:00.315 [system.io] [warning] open: mods/teutonic/data/loading_screen/loading_bar.tga.dds is missing
17:16:03.231 [system.io] [warning] open: data/descr_oil_effect.txt is missing
17:16:03.231 [system.io] [warning] open: data/descr_fire_texture_list.txt is missing
17:16:04.103 [system.io] [warning] open: data/textures/#al_outline.tga.dds is missing
17:16:04.131 [system.io] [warning] open: mods/teutonic/data/text/prebattle_speeches_subtitles.txt.strings.bin is missing
17:16:04.152 [system.io] [warning] open: mods/teutonic/data/text/prebattle_speeches_subtitles.txt is missing
17:16:04.266 [system.io] [warning] open: mods/teutonic/data/text/historic_battles_subtitles.txt.strings.bin is missing
17:16:04.268 [system.io] [warning] open: mods/teutonic/data/text/historic_battles_subtitles.txt is missing
17:16:15.174 [system.io] [warning] open: data/unit_sprites/scotland_Halberdmen_ug1_sprite.spr is missing
17:16:15.187 [system.io] [warning] open: data/unit_sprites/scotland_Halberdmen_ug1_sprite.spr is missing
17:16:15.191 [system.io] [warning] open: data/unit_sprites/scotland_Halberdmen_ug1_sprite.spr is missing
17:16:17.244 [system.io] [warning] open: data/textures/#green_circle.tga.dds is missing
17:16:17.245 [system.io] [warning] open: data/textures/#arrow.tga.dds is missing
17:16:17.246 [system.io] [warning] open: data/textures/#arrow_distance.tga.dds is missing
17:16:17.246 [system.io] [warning] open: data/textures/#outline.tga.dds is missing
17:16:17.265 [system.io] [warning] open: data/textures/#unit_indicator_arrow.tga.dds is missing
17:16:17.266 [system.io] [warning] open: data/battlefield/cloud_sprite.tga.dds is missing
17:16:17.645 [system.io] [warning] open: data/models/textures/weapon_phalanx_spear.tga.dds is missing
17:16:17.838 [system.io] [warning] open: data/models/textures/arrow_red.tga.dds is missing
17:16:17.838 [system.io] [warning] open: data/models_missile/textures/weapons_spears.tga.dds is missing
17:16:17.869 [system.io] [warning] open: data/models/textures/vertex_pointer.tga.dds is missing
17:16:17.869 [system.io] [warning] open: data/models/textures/waypoint_marker.tga.dds is missing
17:16:17.869 [system.io] [warning] open: data/textures/battlefield_border.tga.dds is missing
17:16:17.870 [system.io] [warning] open: data/textures/deployment_area_border.tga.dds is missing
17:16:17.870 [system.io] [warning] open: data/textures/#splash_ring.tga.dds is missing
17:16:17.871 [system.io] [warning] open: data/textures/#water_drop.tga.dds is missing
17:16:17.871 [system.io] [warning] open: data/textures/#weather.tga.dds is missing
17:17:10.780 [system.rpt] [error] Unspecified error. The game will now exit.