Campaign Creations

My, my... me and my stupid problems...

This time I turned a neutral unit into a new protoss unit and got it to work to my liking... but for some stupid reason... I can't group select!
Yes, it is "Non-Neutral" ; and group flag of "men" and nothing else
but I just can't seem to get why it doesn't select more than one in group select...
Please help!

Critters are non-group-selectable. I just looked in DatEdit, and found no "Group-Selectable" option, but I vaguely remember there being something like that... I don't know. Sorry.