B-25 'Briefing Time' locks up screen when exiting in FSX

When pressing Esc, when wanting to exit flight the screen freezes and the screen that should show 'do you want to quit FSX' menu moves to the lower right corner of the screen, and no selection button to quit FSX shows, just the outline of menu screen shows. Need to start Task Manager and then select End Task. Then a message dialog, 'there has been a fatal error in FSX, searching for a solution'. No other message dialog appears after searching for solution, then the FSX menu screen loads and then can quit from there. All other planes in FSX work and no screen freeze or other errors quitting FSX. I am running Windows 7 Professional 64 bit. Installed the FSX patch for B-25 'Briefing Time' and moved folder as documented. As a note for those programs that were built with 32 bit Windows, those on 64 bit Windows now are located in C:\Program Files(x86)\Microsoft Games\Microsoft Flight Simulator X