Thread: an invalid argument was encountered

I searched the forums and only found 1 result for this problem but no fix.
I removed my carPC bench setup to demo it when I hooked it back up the GPS comm Port changed when I detect it under the nav settings in SD it finds it just fine but if I try to save the settings I get the "an invalid argument was encountered"
This happens with any changes I try to make in the nav settings.

Under Mappoint I can configure and save the gps settings just fine.