When you say you created them as a group of 4 I'm not sure what that means. Did you create 1 arch model and tell it there were 4 arches or did you create 4 arches and an arch group that contains the 4?
Thanks for the response Gil....
I created 1 arch model and told it there were 4 arches.
So, I went back and deleted the individual arches in preview..... saved exited the program.....started back up and created the individuals again.
This time it seems to be working fine...... I must have not been holding my mouth right the first time...
Thanks for confirming that I was on solid ground....