I only have Galactic Civil War installed and I have 14.10
did you click apply?
This sounds suspiciously like an anti-virus is blocking Cosmoteer from saving the settings file. Do you have a Documents\My Games\Cosmoteer\settings.txt file?
Documents\My Games\Cosmoteer\settings.txt
roblexboi did you click apply?
You do not need to click apply, clicking okay works too.