I am having the EXACT same problem as the first man. I uninstalled your demo program, and after that, when i try to install the original USB driver for my device, it says i should point out the location of "RapidDrv.sys", which i have already uninstalled along with the demo program.
I have to mention, i deleted all the files related to the demo program, and i have deleted all the Registry keys associated with it, i restarted again and again, it still keeps saying it wants the file's location, and frankly, i can't do anything much more about it. I want to completely remove any traces of your application so that i can use my original driver+software again, without anything else.
I must mention that your faulty demo uninstaller has already wasted a lot of my time and my team's time, and i wish to get back to my system's settings without ever having installed the demo.
My cfg: Win XP Sp3
PS: Before deleting ALL of the registry keys left over, when i plugged in the USB device, it said (in DEVICE Manager) it was a 'Rapid Driver Device'. I was perplexed, as i had already uninstalled your demo program.
I hope you respond soon.
Alex & The Team