Hi !! I Downloaded the V.6, and the DirectX, I chosse a directory, I put the sea level, the program shows me the Report and shows the config, i unlock the city i want to make changes but when i push OK in the windows, happen next: .\FrontEnd.cpp (189): D3DERR_INVALIDCALLCreateDevice .\FrontEnd.cpp (189): D3DERR_INVALIDCALLCreateDevice .\FrontEnd.cpp (189): D3DERR_INVALIDCALLCreateDevice .\FrontEnd.cpp (189): D3DERR_INVALIDCALLCreateDevice .\FrontEnd.cpp (189): D3DERR_NOTAVAILABLECreateDevice .\FrontEnd.cpp (189): D3DERR_NOTAVAILABLECreateDevice after that nothing happens... the program stops... What is the problem? and how can i make it works? Thanks...