Can someone divine why the attached python script never terminates?
I am running with ArcGIS10.3.1 basic.
When I run this using 32-bit python it gets to the last layer
and the terminates with a segmentation violation.
With a 64-bit python it never terminates.
The program runs fine on other maps I have, but
one in particular gives this problem. AFAIK
the map in question is not in any relevant
sense different from those on which the
script runs ok.