WeBWorK Problems

chemistry lewis structure drawing problem broken since 2.20 upgrade

chemistry lewis structure drawing problem broken since 2.20 upgrade

by Stephanie Bryan -
Number of replies: 0

I have the following problem which uses the attached macro, parserLewisStructureTool.pl. Since the upgrade to 2.20, this is not working.  I did not write the macro and the person that did, isn't able to help at the moment.  Can someone help me figure out what caused it to stop working and how it might be fixed? 

drawStructure.pg

parserLewisStructureTool.pl