I just completed a compendium of 11 pulp short stories. As I completed the editing of each story, I sent the html to 5.901 via a call from within the editor to the Sigil command line. Each html opened properly.
I then catenated all stories into a single html file and called 5.901. Sigil crashed with the same error message posted before. How size affects the program is a puzzle. All methods of opening the html have the same result.
I will now revert to the last version and await the magic of the development team.
