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Hi,

I am using ProfUIS254 and with VS2005 build and my MDI application crashes when closed.
I am getting the following error -

Unhandled exception at 0x77cf4391 (ntdll.dll) in sample.exe: 0xC015000F: The activation context being deactivated is not the most recently activated one.

at line# 207 of ExtHook.cpp.

Here is the stack at the time of crash -

    ntdll.dll!_RtlDeactivateActivationContext@8() + 0xa95e bytes    
    kernel32.dll!_DeactivateActCtx@8() + 0x28 bytes    
    mfc80.dll!AFX_MAINTAIN_STATE2::~AFX_MAINTAIN_STATE2() Line 66    C++
    mfc80.dll!AfxWndProcBase(HWND__ * hWnd=0x000a03be, unsigned int nMsg=161, unsigned int wParam=20, long lParam=6816900) Line 411 + 0x26 bytes    C++
    user32.dll!_InternalCallWinProc@20() + 0x23 bytes    
    user32.dll!_UserCallWinProcCheckWow@32() + 0xb7 bytes    
    user32.dll!_CallWindowProcAorW@24() + 0x5e bytes    
    user32.dll!_CallWindowProcA@20() + 0x1b bytes    
    sample.exe!CExtHookSink::HookChains_t::HookChainsWindowProc(unsigned int nMessage=656318, unsigned int & wParam=20, long & lParam=6816900) Line 207 + 0x1b bytes    C++
>    sample.exe!CExtHookSink::HookChains_t::g_HookWndProc(HWND__ * hWnd=0x02593338, unsigned int nMessage=161, unsigned int wParam=20, long lParam=6816900) Line 248    C++
    user32.dll!_InternalCallWinProc@20() + 0x23 bytes    
    user32.dll!_UserCallWinProcCheckWow@32() + 0xb7 bytes    
    user32.dll!_DispatchMessageWorker@8() + 0xed bytes    
    user32.dll!_DispatchMessageA@4() + 0xf bytes    
    sample.exe!CVbfxApp::PumpMessage() + 0xef bytes    C++
    sample.exe!CVbfxApp::MessageLoop() + 0x96 bytes    C++
    sample.exe!CVbfxApp::Run() + 0x31 bytes    C++
    mfc80.dll!AfxWinMain(HINSTANCE__ * hInstance=0x00400000, HINSTANCE__ * hPrevInstance=0x00000000, char * lpCmdLine=0x00872daa, int nCmdShow=1) Line 47 + 0x7 bytes    C++
    sample.exe!__tmainCRTStartup() Line 578 + 0x1d bytes    C
    kernel32.dll!@BaseThreadInitThunk@12() + 0x12 bytes    
    ntdll.dll!___RtlUserThreadStart@8() + 0x27 bytes    
    ntdll.dll!__RtlUserThreadStart@8() + 0x1b bytes    

This occurs on opening seven tabs and closing the application.
Could anyone suggest what possibly could be going wrong?

Thanks in advance.

2.54 is quite an old version. It’s not tested with Windows Vista / 7. You can switch to the latest Prof-UIS version or try to turn off the context activation APIs usage inside MFC by invoking the following code during your app startup:

afxAmbientActCtx = FALSE;