The only .group file I found is in Examples, and its contents are
Code:
?filelist 1
?gamesystem GURPS
?template GURPSFantasy.cst
?pixinch 96 96
?size 192 233
?location 22 22
CorwinBearclaw.chr
DaiBlackthorn.chr
Katrina.chr
RobynMeadows.chr
Did you try editing it manually?
It also seems to me that the templates offered are based on which templates belong to which game system alone.