With VS7 when I create a DX9 D3D application it generates unbuildable source if MFC support is requested in the wizard. The linker errors occure only when I build a release version. (with VS6 the DX9 appwizard generates non warningless but buildable release code) Do you experience the same problem? What would be the solution? R PS: I pasted here the contents of the first few rows of the output window whan building: Compiling... StdAfx.cpp Compiling... diutil.cpp dmutil.cpp d3dfont.cpp d3dfile.cpp d3dutil.cpp d3denumeration.cpp d3dsettings.cpp d3dapp.cpp dxutil.cpp DirectX9Application1.cpp Generating Code... Compiling resources... Linking... mfcs70.lib(stdafx.obj) : error LNK2001: unresolved external symbol ___security_cookie d3dsettings.obj : error LNK2001: unresolved external symbol ___security_cookie d3dutil.obj : error LNK2019: unresolved external symbol ___security_cookie referenced in function "struct D3DXMATRIX __cdecl D3DUtil_GetCubeMapViewMatrix(unsigned long)" (?D3DUtil_GetCubeMapViewMatrix@@YA?AUD3DXMATRIX@@K@Z) d3dfile.obj : error LNK2001: unresolved external symbol ___security_cookie dmutil.obj : error LNK2001: unresolved external symbol ___security_cookie DirectX9Application1.obj : error LNK2019: unresolved external symbol ___security_cookie referenced in function "private: long __thiscall CAppForm::InitAudio(struct HWND__ *)" (?InitAudio@CAppForm@@AAEJPAUHWND__@@@Z) StdAfx.obj : error LNK2001: unresolved external symbol ___security_cookie dxutil.obj : error LNK2001: unresolved external symbol ___security_cookie d3dapp.obj : error LNK2001: unresolved external symbol ___security_cookie dmutil.obj : error LNK2001: unresolved external symbol ___CxxFrameHandler d3dx9.lib(cpudetect.obj) : error LNK2001: unresolved external symbol ___CxxFrameHandler mfcs70.lib(stdafx.obj) : error LNK2001: unresolved external symbol ___CxxFrameHandler DirectX9Application1.obj : error LNK2001: unresolved external symbol ___CxxFrameHandler StdAfx.obj : error LNK2001: unresolved external symbol ___CxxFrameHandler . . . and so on...

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