S.T.A.L.K.E.R.: LOST ALPHA Patch v1.3001 (2nd of May 2014.) changelog:

The patch is savegame compatible, so You do not have to start new game for this patch, but for maximum experience (nad because of Murphy's law) it's highly recommended. If you installed 3rd party / user made fixes and mods for Lost Alpha, it's highly recommended to reinstall the game to have a clean install before you apply the official patch. This is required to avoid conflicts with the 3rd-party content. We can not give support for such cases.

- game binaries are working with administrator privileges now, avoiding problems with User Access Control (UAC) subsystem
- game will work on windows xp, although dx10 cannot be used
- quicksave / quickload buttons now can be remapped
- fixed serious bug with wrong ui_movies.xml which prevented to play half of the game
- fixed storyline battery task in sarcofag
- fixed flying tree and geometry on Yantar level
- fixged geometry on Garbage level
- fixed the crash on r1 (static lightning) render when player entered 'Great Metal Factory' level
- fixed rat monster crash and effectors bug
- fixed random crash related to pda contacts section
- temporaly disabled legs/shadow in options, if you have it enabled, please type this to console: g_actor_body 0
- with removing visible leg feature, the missing footsteps and self shadow works again by default
- "la options" debug menu is disabled on widescreen
- crows are again killable
- ak74, ak74u, L85, G36 sounds synchronization fixed
- proper fix for safe crash
- missing "chmieltist" beer drinking sound fixed
- missing p90 model added
- brightness, gamma and contrast sliders fixed
- no available phrase to say, dialog[yantar_sakharov_start_talk] fixed
- no available phrase to say, dialog[agr_ratcatcher_start] fixed
- no available phrase to say, dialog[dol_specnaz_leader_dialog] fixed- several (hopefully all) missing descriptions added back
- crash when player ESC from solitare and hex viewer fixed
- restored working class for hex viewer, text viewer, image viewer, console
- fix for artefact merger
- crash in repair window fixed
- wrong passwords for doors in pda fixed
- loading last save overlap window fixed
- added marker for 'strelok's flash' and 'yantar wires' because many users reported it's too hard to find them
- fixed camera position to climb out of UAZ jeep
- fixed OnMouseAction crash (Tetris in LA PC)
- Veles gives correct download module, so no need to buy it from Barman
- updated mi24 model, should fix "callback kils bone matrix bone: front_gun_tower"
- improved tasks and task completion on agroprom
- fixed luminocity and distance for stalkers to default value, ai works better
- removed the strange reverb when eax is enabled, and added more stable sound dlls
- temporary fix for missing suit upgrade
- fixed incorrect mag size for upgraded pb1
- added vehicle prices to dialogue
- corrected outfits icons and soldier outfit
- new helicopter sound with tuned volumes
- helicopter in cordon patrols less often
- helicopter windows in agroprom fixed (were transparent on r2-3 renders)
- added pda articles for downloads
- missing vehicle icons were added
- several vehicle properties were changed
- topoliny puh anomaly not glitching anymore
- car fuel should work now
- various small tweaks and fixes

SUPPORTED GAMES (upkk_xray_db.dll)
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S.T.A.L.K.E.R. - Shadow of Chernobyl
S.T.A.L.K.E.R. - Clear Sky
S.T.A.L.K.E.R. - Call of Pripyat

v.1.2
- Supports unpacking of "Shadow of Chernobyl", "Clear Sky" and "Call of Pripyat" !
- All three can be packed back and will now work (not like that lousy 1.1 version i released previously).
- Both "Clear Sky" and "Call of Pripyat" require a .header file that you will automatically obtain when you unpack a DB file. So, rule of thumb - when you unpack a DB file, you should pack it back before you unpack anther DB!

v.1.1
- Supports unpacking of both "Shadow of Chernobyl" and "Clear Sky" !
- "Clear Sky" will won't work with re-packed DB's due to engine's fault. For some reason, the structure compression flag is no longer used by the game, so every file is considered as compressed (even if it's not and the flag is right).
- An Unpacked DB from "Clear Sky" might produce result larger than the input file! This is not a bug! A DB file may have few identical entries with different file path. This is made for size optimization by the game devs, but I didn't bother to recreate that feature - sorry.

v1.0
- Supports only "S.T.A.L.K.E.R. - Shadow of Chernobyl" !
- Packing doesn't support encryption and compression of the file structure, so it's normal if your output file size is bigger than the original, even if you didn't change any file.