I hope you are still working on this.
I pulled my ELM 327 out of the truck to try it in another car.
When I plug in the device to the OBD connector on the car the "power" light lights up.
Using my normal OBD software, I start the program, no lights change. As soon as I hit the "Open Connection" button all th elights light up and continue flashing.
With RR only th epower light is on. I checked that "x, obdmpg" is in the menu file, the dll is registered and the files are in RR directory.
This would suggest to me that either the program is not starting or the connection is not opening.
Is there any way to check that the program is running?