The Wind-ups' FXE loader routine is bugged and crashes when loading files with certain layout.. GPengine happens to be such file. You can download a patched version from www.deadcoderssociety.tk -> gp32 -> download -> dl -> fixed_wind* something (read the dir.. there is no direct link). Other alternative is to convert GPengine.fxe to GPengine.gxb with UnFxe tool, which can be found from the same site.