Okay, I found out it was a problem with OpenAL, disabling it solved the problem. I'll start a new thread to discuss the issue.
EDIT: Well, I didn't manage to reproduce the problem in any OMs, so I'll guess it's something in your mission. Here's my thief2.log, if you or anyone else likes to see it. I don't care about it too much, as I can live with the fact that I can't use OpenAL on this mission.
Code:
: PID: 2404
: CPU: arch=x86-64 , fam=586 , cpus=4
: SIMD: SSE=3 , 3DNow=0
: OS Version: 6.2.9200
: Desktop resolution: 1366 x 768
: Virtual desktop resolution: 1366 x 768
: -----------------------------------------------------------
: CWD: C:\Pelit\Thief2
: FM Path: FMs\FromBeneathTheSands
: -----------------------------------------------------------
: App Version: Thief 2 Final 1.22
: --------------------- misc config -------------------------
: resname_base .\patchedres+.\RES
: load_path .
: script_module_path .
: movie_path FMs\FromBeneathTheSands\Movies+.\MOVIES
: mod_path .\MODS\t2water+.\MODS\t2skies+.\MODS\EP\EPBooks+.\MODS\EP+.\MODS\NTEX+.\patchedmis
: install_path .
: language english
: game_screen_size 1366 768
: game_screen_depth 32
: game_screen_flags 45
: game_full_screen 1
: game_hardware 1
: single_display_mode 2
: ui_scale_mode 2
: use_d3d_display
: framerate_cap 100.0
: SlowFrame 4
: SlowFrameUI 10
: force_32bit
: force_32bit_textures
: mipmap_mode 2
: lm_mipmap_mode 0
: lm_init_texmem 2
: lm_filter_margin 1
: disable_lightmap_aniso
: tex_edge_padding 2
: alpha_test_as_opaque
: d3d_disp_sw_cc
: d3d_disp_enable_hdr
: multisampletype 8
: postprocess 1
: d3d_disp_enable_distortionfx
: sfx_device 4
: sfx_channels 12
: sfx_vol_music -474
: sfx_vol_2d 0
: sfx_vol_3d 0
: submerged_sound_occlusion 0.1 0.5 0.88
: force_underwater_reverb
: game dark
: obj_min -8192
: obj_max 2400
: max_refs 14000
: gui_font intrface\smalfont
: enhanced_sky 1
: skip_intro
: crop_movies
: new_mantle
: z_far 512
: wr_render_zcomp
: render_weapon_particles
: legacy_force_match_unrefs 0
: dark_zcomp_arm
: -----------------------------------------------------------
: Enumerating D3D9 adapters (1)...
: Adapter 0
: device name: \\.\DISPLAY1
: driver : igdumdim32.dll
: descr : Intel(R) HD Graphics 4000
: driver ver : 0x000A0012-000A0CEC
: vendor id : 0x00008086
: device id : 0x00000166
: subsys id : 0x145D1043
: device guid: D7B78E66-4226-11CF-1F7F-5734B4C2
: desktop res: 1366 x 768
: Modes
: 320 x 200 x 32
: 320 x 240 x 32
: 400 x 300 x 32
: 512 x 384 x 32
: 640 x 400 x 32
: 640 x 480 x 32
: 800 x 600 x 32
: 1024 x 768 x 32
: unsupported mode 1280 x 600 x 32 (not in mode table)
: 1280 x 720 x 32
: 1280 x 768 x 32
: 1360 x 768 x 32
: 1366 x 768 x 32
: Device Validation
: validated ok, device added (0, E390000)
: Enumeration done
: OpenAL Init...
: OpenAL32.dll: 6.14.357.19
: wrap_oal.dll: 2.1.4.0
: Default device: Generic Hardware
: Enumerating devices without validation...
: Device: Generic Hardware
: Device: Generic Software
: found 2 unvalidated device(s)
: Opening default OpenAL device "Generic Hardware"...
: Device 0 (default)
: name : Generic Software
: version : 1.1
: version str: 1.1
: vendor : Creative Labs Inc.
: renderer : Software
: 3D sources : 248
: 2D sources : 8
: EFX : 1
: EAX2 : 1
: EAX3 : 0
: EAX4 : 0
: EAX5 : 0
: occlusion : 1
: XRAM : 0
: Opened device 'Generic Software'
: EAX reverb support enabled
: occlusion support enabled
: D3DProvider: Enumerating adapter 0 modes
: 320 x 200 x 32
: 320 x 240 x 32
: 400 x 300 x 32
: 512 x 384 x 32
: 640 x 400 x 32
: 640 x 480 x 32
: 800 x 600 x 32
: 1024 x 768 x 32
: unsupported mode 1280 x 600 x 32 (not in mode table)
: 1280 x 720 x 32
: 1280 x 768 x 32
: 1360 x 768 x 32
: 1366 x 768 x 32
: D3DProvider: Enumeration done
: sw framerate cap requested (10000 us)
: D3DProvider StartMode: smode 1366x768x32 ; mode 640x480x32 (5 9 0 2D) ; 2d_surf_mode: 0
: CreateDevice: res = D3D_OK ; 1366x768 fmt=22 zfmt=75 cnt=1 ms=8 swap=1 fs=1 hz=0 pres=1 flags=2
: Loaded script module "convict"
: Loaded script module "gen"
: sw framerate cap requested (10000 us)
: D3DProvider StartMode: smode 1366x768x32 ; mode 1366x768x32 (7 9 1 3D) ; 2d_surf_mode: 3