If your application compiles and links without problems, but it then dies during startup (you may or may not see the frame window start to come up) then check for the following common mistakes:

• is more than one resource using the same number in your .RC or .DLG file?

• are you trying to allocate/create a resouce in your .CPP file -- say an IPushButton -- when in reality it has been defined as something else in your .RC or .DLG file?

• Bill Law (law@netscape.com) also says: The most common occurrence is that your app is throwing an (uncaught) exception during construction of the first (frame) window. This terminates silently, unless you take steps to capture the exception information. To do that, follow the instructions provided in the on-line VACPP FAQ (in the section "Coding With User Interface Classes"->"Exceptions"->"Why Does My Program Just Exit").
  [Editor's note: the VACPP FAQ is D:\IBMCPP\HELP\CPPFAQ.INF]

• did you specify the type of application when linking? If the application is compiled with the default value of /pmtype:vio then your window will not come up. Make certain you use /pmtype:pm from the linker, or /B" /pmtype:pm" when linking directly from the compiler.