I think I might have fixed the crash you were experiencing with xProcess and chess engines. Here's a test project I sampled which used to crash but no longer does: shogi_demo.yyz. At least for me, anyway. Import the version of the xProcess extension from the YYZ into your chess game project and see if that fixes it. (While deleting the old version of xProcess in your project). Here's to hoping you haven't deleted your game project file. The crash happened because the DLL was compiled with Visual Studio. Compiling with MinGW/GCC instead fixed it. Really stupid solution, but at least it works now. Since STIGMA uses MinGW/GCC as its compiler on Windows, that explains why it didn't crash.