I seemed to have gotten an old version (1.5) of the PaExec utility. I downloaded it again and now have version 1.11. Further testing with ver 1.11 seems to show that it suffers from the same problem as PsExec in that I can not get the GUI application to ever interact with the desktop. But I did figure out that the parameters are order sensitive. So It appears that I have to put the -i and -d between the server name and the application path. When I do this version 1.11 still does not make the gui application interactive. I assume that with the -i {argument} the argument should be the session number as shown in the remote desktop services manager.
By going back to version 1.5 and putting the -i and -d parameters between the server name and the application name the gui application does load in interactive mode and PaExec does terminate leaving the Gui application running on the server.
server. But neither ver 1.5 or 1.11 seem to like an argument of the session to run the application in.
So, version 1.5 is working now that I know the parameters are order specific but version 1.11 does not seem to work.