Everytime you group, that group must also be not neutral.  If there is just one thing in the model that was not changed from neutral, either a group or a mesh in a group, then it won't work properly.

I have had this happen to me and I just had to go back and ungroup and check every little thing - there always turned out to be one (or sometimes more than one) thing that was still neutral.

Measure your mind's height
by the shade it casts.
Robert Browning (Paracelsus)

Fran's Freestuff

http://franontheedge.blogspot.com/

http://www.FranOnTheEdge.com