Structural Cutbacks only working half of the time

Is anybody else having an issue where the structural cutbacks in AECOsim are only working about half of the time?  It's not always the case but it seems to happen quite often for me when I'm connecting a member between 2 members and only one side copes.  Then if I try to manually cope the un-coped side using the cutback tool, nothing changes.  I do have "Cope to any interfering member" set when I'm placing them.  It makes running Clash Detection useless.

John K