Um, the installer installs to Road Runner not RoadRunner. Some older versions of Road Runner were set to RoadRunner folder. This is wrong. I would suggest backing up and installing to Road Runner folder as some older hard coded stuff is broken the other way.
As for the ports SerialSwitch does not control anything until it is loaded. I just tested it and I see where I am not saving to ini on close. Thank you for testing and reporting back. I have updated the zip file in the first post.