A recent change in the Starlink KAPPA package causes the SMURF pol2map command to crash . The main symptom is a message at the end of the pol2map logfile that looks something like this:
+ -50 . could not convert string to float: '+ -50'
The change that causes this problem occurred on 30th April 2021 so will affect Starlink installations copied from EAO on or after that date. The problem has been fixed today (19th May) so anyone affected by this problem should copy starlink again after completion of the next nightly build.
Thanks to Jeremy Yang for reporting this problem.