SWMM Statistics Report causes crash

To reproduce:

Run a simulation (using Example1.inp will work)
Click on the Statistics Report
With the default parameters, click "OK"

The console error is:

Traceback (most recent call last):
  File "frmStatisticsReportSelection.py", line 130, in cmdOK_Clicked
  File "frmStatisticsReport.py", line 105, in set_from
  File "core\swmm\stats.py", line 281, in GetStats
  File "core\swmm\stats.py", line 666, in RankEvents
TypeError: sort() takes no positional arguments

Version: MTP6r1

USEPA / SWMM-EPANET_User_Interface

SWMM Statistics Report causes crash #323