The issue popped up again recently.
Found it to be a Skatter issue after all.
I could pull it up on a machine without Skatter plug in installed with ease...would hang forever on my machines that had Skatter installed.
Went in and purged/deleted the Skatter reference on the non-Skatter machine....saved then opened in my Skatter machine (no problem) - then redefined the Skatter perimeters...and works like a charm.
Unsure what the hang up is and once redefined the problem hasn't occurred again.