Yep tried that and running in compatability mode for xp, vista. Also tried reinstalling and updating but nothing worked .
Edit: heres what the log says if it helps.
Leadwerks Engine 2.40
Initializing Renderer...
OpenGL Version: 3.3.0
GLSL Version: 3.30 NVIDIA via Cg compiler
Render device: GeForce GTS 250/PCI/SSE2
Vendor: NVIDIA Corporation
DrawBuffers2 supported: 0
32 texture units supported.
GPU instancing supported: 0
Shader model 4.0 supported: 0
Conditional render supported: 0
Loading shader "zip::c:/users/kyle seale/desktop/leadwerks engine sdk/shaders.pak//query.vert", ""...
Loading shader "zip::c:/users/kyle seale/desktop/leadwerks engine sdk/shaders.pak//query.vert", ""...
Model Viewer and Material editor logs stop here too.