It's possible that the cdm.cfg file is corrupted. Try the following to resolve this:
1) On the windows system where you are opening the cdm Configure GUI, go to a cmd prompt window and type:
cd %temp%
2) Press enter, look for the util folder, and open this.
3) Look for all the exe's related to cdm probe and delete all of these exe's
4) Now de-activate your probe, then delete it.
5) Delete the cdm probe directory and its contents on the robot where it is installed and do a fresh install of the probe (latest version)
6) Try configuring the probe again