When I try and group the barrel/plate/head of the tank it gives me the "loop in Parent" Error how do i fix this?solution.
Alt + P clear parents (I had to deselect all and regroup then Ctrl +P to group again and issue was solved)
Thanks for including the solution as well! A loop in parents error happens if, for example, you parent the turret of the tank to the body, and then have the body selected as you parent the barrel to the turret. An object can't be the child of an object it's already the parent of. Hope that clears things up!