This error appears when trying to use the dx 11 renderer. Win 7 x64 system with gtx980 GPU, intel 4th gen i5. dx 8 and 9 work fine. <img width="418" height="206" alt="Image" src="https://github.com/user-attachments/assets/16256b31-15b9-473a-b229-0090a640528d" />