It keeps asking for the UCS and you can't "ESC", exit out the window, enter anything that will produce anything but it asking for you to pick the object for the UCS again. I have to use task manager to close it, and no error report gets produced. It doesn't save or try and restore. It's just lost. I attached a screen shot.
Hi, I had a similar incident and only to find that if there are no connections to identify it will not make the group.
since your model is seen as parts and not assembly.
try making Connections, then Group them, and make Auto positioning.
it worked for me in that manner.
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