Tstevic
Member
Several weeks ago, communications with a Red Lion CSMSTR worked fine. I just tried to connect and make a change to the program and I get a "Unable to Open Port" error. The help says I have a bad USB driver, but I have gone through and deleted each driver one by one to no avail. The driver installed that came with the software is for NT only, so I can not manually add the driver. I have also tried two other cables. It seems to me that my laptop in not seeing the RL controller. Any suggestions or experience with this?