Paul,
I agree with what you said. Only the kicker is that it's the X55 driver, not the programming software, that causes the "space" characters malfunction and conflict with FSUIPC. I had only the driver loaded when I first encountered the problem. Loading the programming software, testing the system, and then deleting the software, and testing again, all showed the same symptom of continuous "space" characters.
I was attempting to set up everything on the X55 with FSUIPC just as you describe, but the conflict prevents FSX from operating normally.
I didn't have this issue with either the X45, the X52 pro, or the yoke. This is something new with the X55 driver.
So the irony is, it works fine with unregistered FSUIPC - which means I can't program the keys that way. With registered FSUIPC, I can program the keys, but I get the malfunction.
Thanks,
Doc104