I did have a look at why the editor wouldn’t post. The cause is Mudcat’s sloppy html. The post form      is part in and part out of a table for starters. It works somehow for normal posting but when the extension does its bit, the box we put the replies in doesn’t get sent with the rest of the data. I probably could work round that but I think it would take more effort than I want for what’s only a one off experiment.

I’ve got Dave’s browser tools installed on Firefox.