Testing DirectX 10 Compatibility [SOLVED]

So I’ve run into little bit of an issue, after one patch, not sure which one, actually few months ago, game stopped to be compatible with DirectX 10 cards. Shaders are of course targeting Shader Model 4 and I can’t figure out what could be causing the issue. Obviously there is possibility of buying an older PC, install VS and debug… but this is kinda time consuming. Is there any way how to emulate DirectX 10 limitation? (Some other way than virtual machine would be also nice).

http://graphicdna.blogspot.cz/2013/10/directx-control-panel-and-d3d-debug.html Perfect… DirectX sdk works really well.