Some sort of bug in universe 2 let me buy merge gems costing more mana than I had. After that, game can't load and firefox suggests stopping the script. My guess is attempting to calculate a mana cost of "infinity". I can share the broken savefile data.sqlite if that would be useful. Another thing (which caused no issues) was in universe 2 I was getting double singularities (2 singularities and 20 points), figured it was intentional but now I'm not sure.
Anyways, quitting here since I'm not going to restart. Unless someone would mind sharing a savefile from roughly where I was (universe 2, 20 singularities).