Psychonauts crashes right after entering the 'Load Save' door. Here is the terminal output:

Shader assembly time: 0.88 seconds
Found OpenAL device: 'Simple Directmedia Layer'
Found OpenAL device: 'ALSA Software'
Found OpenAL device: 'OSS Software'
Found OpenAL device: 'PulseAudio Software'
Opened OpenAL Device: '(null)'
ERROR: CAudioDrv::CAudioDrv->alGenSources reports AL_INVALID_VALUE error.
PSYCHONAUTS UNIX FILENAME: corrected 'workresource/sounds/commonfx.isb' to 'WorkResource/Sounds/commonfx.isb'
PSYCHONAUTS UNIX FILENAME: corrected 'workresource/sounds/commonvoice.isb' to 'WorkResource/Sounds/commonvoice.isb'
PSYCHONAUTS UNIX FILENAME: corrected 'workresource/sounds/commonmusic.isb' to 'WorkResource/Sounds/commonmusic.isb'
PSYCHONAUTS UNIX FILENAME: corrected 'workresource/sounds/commonmentalfx.isb' to 'WorkResource/Sounds/commonmentalfx.isb'
PSYCHONAUTS UNIX FILENAME: corrected 'workresource/sounds/commonmenfxmem.isb' to 'WorkResource/Sounds/commonmenfxmem.isb'
PSYCHONAUTS UNIX FILENAME: corrected 'workresource/sounds/commonfxmem.isb' to 'WorkResource/Sounds/commonfxmem.isb'
GameApp::StartUp InitSoundFiles() completed in 0.15 seconds
GameApp::StartUp Load some common textures completed in 0.00 seconds
WARN: ENGINE: Lua garbage collection starting
FreeUnusedBlocksInBuckets released 0 Kb
GameApp::StartUp InitEntities() completed in 0.02 seconds
PSYCHONAUTS UNIX FILENAME: corrected 'WorkResource/SavedGames/savegameprefs.ini' to 'WorkResource/SAVEDGAMES/savegameprefs.ini'
PSYCHONAUTS UNIX FILENAME: corrected 'WorkResource/SavedGames/savegameprefs.ini' to 'WorkResource/SAVEDGAMES/savegameprefs.ini'
GameApp::StartUp m_pSaveLoadInterface->Startup() completed in 0.00 seconds
GameApp::StartUp m_UserInterface.Setup() completed in 0.00 seconds
STUBBED: multisample at EDisplayOptionsWidget (/home/icculus/projects/psychonauts/Source/game/luatest/Game/UIPCDisplayOptions.cpp:97)
STUBBED: VK_* at CheckVirtualKey (/home/icculus/projects/psychonauts/Source/CommonLibs/DirectX/SDLInput.cpp:1443)
Game: Engine Running hook startup
Game: Engine   -> SetupGlobalObjects
Game: Engine   -> SetupLevelMenu
Game: Engine   -> InitMath
GameApp::StartUp InitLua2() completed in 0.00 seconds
GameApp::StartUp SetupLevelMenu() completed in 0.00 seconds
STUBBED: do we even use this? at InitSocket (/home/icculus/projects/psychonauts/Source/game/luatest/Game/Gameplaylogger.cpp:210)
GameApp::StartUp Post-Install total completed in 0.20 seconds
Start Up completed in 1.57 seconds
UnixMain: StartUp successful..
Working directory: /opt/psychonauts
STUBBED: dispatch SDL events at PCMainHandleAnyWindowsMessages (/home/icculus/projects/psychonauts/Source/game/luatest/UnixMain.cpp:56)
STUBBED: write me at GetJoystickInput (/home/icculus/projects/psychonauts/Source/CommonLibs/DirectX/SDLInput.cpp:428)
STUBBED: write me at GetJoystickActionValue (/home/icculus/projects/psychonauts/Source/CommonLibs/DirectX/SDLInput.cpp:613)
PSYCHONAUTS UNIX FILENAME: corrected 'workresource/cutScenes/prerendered/dflogo.bik' to 'WorkResource/cutscenes/prerendered/DFLogo.bik'
Prerender subtitle file: workresource\cutScenes\prerendered\dflogo.dfs not found
PSYCHONAUTS UNIX FILENAME: corrected 'workresource/cutScenes/prerendered/dflogo.bik' to 'WorkResource/cutscenes/prerendered/DFLogo.bik'
STUBBED: fixed function pipeline? at setColorOp (/home/icculus/projects/psychonauts/Source/CommonLibs/DFGraphics/Texture.cpp:2097)
STUBBED: fixed function pipeline? at setColorArg1 (/home/icculus/projects/psychonauts/Source/CommonLibs/DFGraphics/Texture.cpp:2106)
STUBBED: fixed function pipeline? at setColorArg2 (/home/icculus/projects/psychonauts/Source/CommonLibs/DFGraphics/Texture.cpp:2115)
STUBBED: fixed function pipeline? at setAlphaOp (/home/icculus/projects/psychonauts/Source/CommonLibs/DFGraphics/Texture.cpp:2124)
STUBBED: fixed function pipeline? at setAlphaArg1 (/home/icculus/projects/psychonauts/Source/CommonLibs/DFGraphics/Texture.cpp:2133)
STUBBED: fixed function pipeline? at setAlphaArg2 (/home/icculus/projects/psychonauts/Source/CommonLibs/DFGraphics/Texture.cpp:2142)
STUBBED: fixed function pipeline? at setProjected (/home/icculus/projects/psychonauts/Source/CommonLibs/DFGraphics/Texture.cpp:2223)
LOC WARN: Could not open Localization file 'Localization/English/_StringTable.lub'
STUBBED: memory status at UpdateMemoryTracking (/home/icculus/projects/psychonauts/Source/game/luatest/Game/GameApp.cpp:4884)
WARN: Couldn't resize array to 128; out-of-bounds elements are still in use: Vertex Pool, 188
Loading new level 'STMU'
STUBBED: Need multithreaded GL at DisplayLoadingScreen (/home/icculus/projects/psychonauts/Source/game/luatest/Game/LoadingScreen.cpp:83)
=========================
Memory post unload level
=========================
=========================
LOC WARN: Could not open Localization file 'Localization/English/ST_StringTable.lub'
DaveD: Info: Texture pack file contains 137 textures
Doing a texture readback for locking!
Game: Engine Saved[GLOBAL]: InstaHintFord_HostileRecord = [table]
Game: Engine Saved[GLOBAL]: InstaHintFord_HostileOrder = [table]
WARN: Redundant packfile read: anims\thought_bubble\bubblefirestarting.jan
WARN: Redundant packfile read: anims\thought_bubble\bubbleintothemind.jan
WARN: Redundant packfile read: anims\thought_bubble\bubbleinvisibility.jan
WARN: Redundant packfile read: anims\thought_bubble\bubblepopperfill.jan
WARN: Redundant packfile read: anims\thought_bubble\bubbletelekinesis.jan
Initializing level script (if there is one)
PSYCHONAUTS UNIX FILENAME: corrected 'workresource/sounds/stfx.isb' to 'WorkResource/Sounds/stfx.isb'
Game: Engine Reloading goals:
Game: Engine Saved[GLOBAL]: NextEncouragement = '/GLZF014TO/ 10'
Game: Engine Saved[GLOBAL]: bUsedSalts = 0
Game: Engine Saved[GLOBAL]: bSTEntered = 1
Game: Engine Saved[GLOBAL]: memoriesST = 1
Game: Engine Saved[GLOBAL]: PsiBallColor = 'red'
Game: Engine Saved[ST]: lastSubLevel = 'STMU'
Game: Engine LOADING LEVEL st.STMU
Game: Engine Saved[CA]: CALevelState = 1
Game: Engine Cutscene progression: CS Script moving from state nil to state nil, resultant state nil.  Time: 0.124746672809124.
* Stack Trace
1: (null)                    (line   -1, file '(none)) ()
2: SpawnScript               (line   -1, file 'C) (global)
3: onBeginLevel              (line   -1, file '(none)) (field)
4: (null)                    (line   -1, file '(none)) ()
WARN: Cannot call GetDirectoryListing when running from the DVD
Game: Engine Raz spawning at DartStart startpoint
VM  : LevelScript could not find script 'doorrimlight1'
* Stack Trace
1: (null)                    (line   -1, file '(none)) ()
WARN: (none(-1) SetEntityAlpha LevelScript: NULL script object passed
Game: Engine Saved[GLOBAL]: bLoadedFromMainMenu = 1
Game: Engine Saved[GLOBAL]: NextEncouragement = '/GLZF014TO/ 10'
Game: Engine Saved[GLOBAL]: NeedRankIncrement = 0
STUBBED: Need multithreaded GL at HideLoadingScreen (/home/icculus/projects/psychonauts/Source/game/luatest/Game/LoadingScreen.cpp:110)
WARN: ENGINE: Lua garbage collection starting
FreeUnusedBlocksInBuckets released 0 Kb
Game: Engine Saved[GLOBAL]: SplineFigmentTVSizex = 4.51434326171875
Game: Engine Saved[GLOBAL]: SplineFigmentTVSizey = 46.38104248046875
Game: Engine Saved[GLOBAL]: SplineFigmentTVSizez = 47.08810424804688
WARN: (none(-1) SetNewAction LevelScript: no string passed
======================
Asset load progression
======================
Initial: 2.518 MB Vertex, 8.688 MB Texture
Level  : 3.719 MB Vertex, 22.535 MB Texture
Scripts: 3.747 MB Vertex, 22.848 MB Texture
======================
======================
Memory post level load
======================
======================
WARN: ENGINE: Lua garbage collection starting
FreeUnusedBlocksInBuckets released 0 Kb
DaveD: Level loaded in 0.14 seconds
Anim: anims\objects\tk_arrow_idle.jan: loaded (1 frames latency)
Anim: anims\dartnew\helmet\darthelmetdn.jan: loaded (1 frames latency)
Anim: anims\thought_bubble\shieldloop.jan: loaded (1 frames latency)
Anim: anims\dartnew\standready.jan: loaded (1 frames latency)
Anim: anims\dartnew\walkmove.jan: loaded (1 frames latency)
Anim: anims\janitor\hint_end.jan: loaded (1 frames latency)
Anim: anims\thought_bubble\ballstatic.jan: loaded (1 frames latency)
Anim: anims\dartnew\actionfall.jan: loaded (1 frames latency)
Anim: anims\dartnew\standstill.jan: loaded (1 frames latency)
Anim: anims\dartnew\pack\packbounce_lf_rt.jan: loaded (1 frames latency)
Anim: anims\dartnew\pack\packbounce_up_dn.jan: loaded (1 frames latency)
Anim: anims\dartnew\helmet\darthelmetdefpose.jan: loaded (1 frames latency)
1: 1    (number)
1: 1    (number)
STUBBED: This is probably wrong at GetDt (/home/icculus/projects/psychonauts/Source/CommonLibs/DFUtil/Profiler.cpp:181)
STUBBED: set specular highlights at setSpecularEnable (/home/icculus/projects/psychonauts/Source/CommonLibs/DFGraphics/Renderer.cpp:2035)
Anim: anims\dartnew\trnrtcycle.jan: loaded (1 frames latency)
Anim: anims\dartnew\run.jan: loaded (1 frames latency)
Anim: anims\dartnew\walk.jan: loaded (1 frames latency)
Anim: anims\thought_bubble\bubbledoublejump.jan: loaded (1 frames latency)
Anim: anims\dartnew\longjump.jan: loaded (1 frames latency)
Anim: anims\menubrain\door1crack.jan: loaded (1 frames latency)
Anim: anims\menubrain\door1crackedidle.jan: loaded (1 frames latency)
Anim: anims\menubrain\door1closedidle.jan: loaded (1 frames latency)
Anim: anims\dartnew\180.jan: loaded (1 frames latency)
Anim: anims\menubrain\door3crack.jan: loaded (1 frames latency)
Anim: anims\menubrain\door3crackedidle.jan: loaded (1 frames latency)
Anim: anims\menubrain\door3closedidle.jan: loaded (1 frames latency)
Anim: anims\dartnew\railslide45angle.jan: loaded (1 frames latency)
Anim: anims\dartnew\railslideflat.jan: loaded (1 frames latency)
Anim: anims\dartnew\trnlfcycle.jan: loaded (1 frames latency)
WARN: (none(-1) SetNewAction LevelScript: no string passed
Anim: anims\dartnew\mainmenu_jump.jan: loaded (1 frames latency)
Anim: anims\menubrain\door1open.jan: loaded (1 frames latency)
ERROR: Assert in /home/icculus/projects/psychonauts/Source/game/luatest/../../CommonLibs/Include/../DFGraphics/Color.h, line 96
v.x >= 0.0f && v.x <= 1.0f && v.y >= 0.0f && v.y <= 1.0f && v.z >= 0.0f && v.z <= 1.0f && v.w >= 0.0f && v.w <= 1.0f

Encountered Error:
  Psychonauts has encountered an error

/home/icculus/projects/psychonauts/Source/game/luatest/../../CommonLibs/Include/../DFGraphics/Color.h, line 96
v.x >= 0.0f && v.x <= 1.0f && v.y >= 0.0f && v.y <= 1.0f && v.z >= 0.0f && v.z <= 1.0f && v.w >= 0.0f && v.w <= 1.0f

 Please contact technical support at http://www.doublefine.com.

I am currently using Bumblebee for hybrid graphics, if that helps in any way.