Hello Rawhinitipo!
Exactly what happens when you try to run your file on the laptop with DirectRT? Do any error messages appear? If so, what do they say? What do you see on the screen?
Can you run files from the Samples folder that comes with the DirectRT file folder?
Please also tell me the full version number (i.e., 20xx.x.xxx) of your copy of DirectRT on the laptop and the desktop. You can find it by opening DirectRT and selecting Help>About DirectRT from the main menu bar.
Jason Reed
Empirisoft Software Support Specialist