FYI:
ABS 2007 throws a wobbly.
Refreshing Dialog
*** Program Error: BAD ARGUMENT TYPE: NUMBERP: NIL ****Cancel*
Then it locks up and I have to give AutoCAD the three-finger-salute!
I'm not sure if it's ABS/ADT related since I tried it on ABS, which has ADT built into it, or if it's a 2007 thang.