Grimrock

So just bought the game and would really love to play it, have uninstalled and re-installed to no avail. This is what I get.

=== System Info ===

Game Version: 2.1.9
Computer name: ANGELINA-PC
CPU Vendor: GenuineIntel
CPU Brand: Intel(R) Core(TM)2 Duo CPU T6400 @ 2.00GHz
OS Version: 6.1
OEM ID: 0
Physical CPUs: 2
Logical CPUs: 0
Page Size: 4096
Total Mem: 4094 MB
Free Mem: 2093 MB

=== GPUs ===

Device name: \\.\DISPLAY1
Device string: NVIDIA GeForce 8600M GT
State flags: 08000005

Device name: \\.\DISPLAY2
Device string: NVIDIA GeForce 8600M GT
State flags: 00000001

Device name: \\.\DISPLAYV1
Device string: RDPDD Chained DD
State flags: 00000008

Device name: \\.\DISPLAYV2
Device string: RDP Encoder Mirror Driver
State flags: 00200008

Device name: \\.\DISPLAYV3
Device string: RDP Reflector Display Driver
State flags: 00200008

=== Settings ===

Render Engine: d3d9
Audio Engine: xaudio2
Steam: true
Resolution: 1280 x 800
Display Mode: fullscreen (1)
Vertical Sync: enabled (2)
Texture Resolution: high (3)
Texture Filter: anisotropic (3)
Shadow Quality: high (3)
SSAO Quality: high (3)
Rendering Quality: high (2)
Difficulty: normal
Oldschool Mode: false

=== Software Failure ===

[string "Grimrock.lua"]:0: D3DError - Reset() failed: D3DERR_INVALIDCALL
stack traceback:
[C]: in function 'isReadyToRender'
[string "Grimrock.lua"]: in function 'display'
[string "Grimrock.lua"]: in main chunk

Try reinstalling Direct-X and VC++ libraries (VCREdist....)

The Truth wrote:OS Version: 6.1
...
Device string: NVIDIA GeForce 8600M GT
...
[string "Grimrock.lua"]:0: D3DError - Reset() failed: D3DERR_INVALIDCALL

First of all:
the D3DError hints at a corrupt or outdated DirectX installation. This needs to be fixed.
-> Install the latest nvidia video driver for your card (that'll be the v340.52 notebooks-edition; not the regular one!)
=>> in the installer select the "Custom" install option plus check the "Reinstall" option there!
=>> de-select the 3D-part of the driver; you won't need it
-> After the driver installation re-install DirectX (see the _CommonRedist folder that came with the game)

Now a word of warning regarding the GPU itself. The GeForce 8600M GT may be able to run the game BUT it is way WAY below the minimum requirement. The game requires a certain amount of rendering power which this chip can not provide even with all gfx options set to low so most of the time you will crawl around at 20 FPS and less.

To give an impression on appearance and FPS here's a screenshot from my old PC whose GPU has the same performance as yours: