OK, It is fixed.
You can update your installation from GhiHub to get the fix.
Instructions for updating the program are on the wiki:
http://rayshobby.net/mediawiki/index.php?title=Python_Interval_Program_for_OSPi#Updating_the_program
Changed the start of line 859 in ospi.py from “elif” to “if”.
Thanks for reporting this bug.
Dan