>We cannot run anything we've tested on this system. Bat files and DOS programs both react the same way. Like I mentioned, it is something that we've installed at many sites.
>Our use of the API is:
>odosproc.createobj('api_apprun','dosprog.exe param','default_directory','NOR')
>odosproc.launchandwait()

If you're using my class, it should be launchappandwait()

If I had to guess, there's either a problem with how the DOS path is set up, preventing you from finding an executable, or some parameter of the default command processor. I'd take a look at the DOS environment for starters.