Executable not behaving correctly when launched using shell on Windows

[Trevor DeVore]

I have a program that consists of a splash screen and the program file. 
  The splash screen is the executable which shows the splash graphic for 
2 seconds, sets its location off the screen and opens the program stack 
in a new window.  This works fine on Mac and windows when double 
clicking on the splash executable.

I created an installer which launches the executable after installing 
the program.  In the installer code when the user clicks on the "Launch 
Program" button the installer launches the program using applescript on 
mac and shell on windows.  On the Mac everything works fine.  On 
Windows, the splash screen appears, then disappears but never opens the 
main program stack window.  The process is open, but no window.  
Everything works fine if I double click on the program executable 
directly.

The code I use to open the app from the installer is:
put shortFilePath (pFilePath) into pFilePath
set hideConsoleWindows to true
put shell ("start" && pFilePath) into tError

Has anyone encountered something similar and know of a solution?

Thanks,

-- 
Trevor DeVore
Blue Mango Multimedia
trevor at mangomultimedia.com