I have been trying to connect roll, pan and tilt radians to the laptop to do some adjusting. I had the wrong comm port selected originally, changed that, then I got connected. I changed the slew and it went a bit crazy so I had to quickly unplug. Now it wont connect back again but nothing has changed, I'm now getting the message: "error writing to comms port: application-defined or objected-defined error. Please reselect comms port." Any help very much appreciated! ASAP! Thanks.