Don't work with ESR Version Rated 4 out of 5 stars

I Use the ESR Version (now at 24.5) and the Editor don't work anymore. I had one rule already created and it works on the site, but if I want to edit the rule or add a new one I get just an empty gray panel without any function.

When I press save, I got In the old fashion error console (via AddOn web developer) one error

Zeitstempel: 28.05.2014 11:39:28
Fehler: TypeError: style is null
Quelldatei: chrome://stylish/content/edit.js
Zeile: 294

I tried to downgrade to 1.4.1 but it still doesn't work. I am not sure when I did install stylish. But since it did work, I will try some older versions.

EDIT: I find the solution, for some obscure reason the config value extensions.stylish.editor is zero, if I change it to 1 everything works fine.

This review is for a previous version of the add-on (1.4.3.1-signed).