Re: Localization of error pages in 7.3 does not work?
I tried it out and yes, you need the index file indeed. Otherwise the template will not be used... Generally MWG always loads the index first, the index contains a $CONTENT$ variable where the content of the actual template is inserted. Probably the language is "incomplete" without the index.html. You can simply copy&paste it in the GUI using the template editor.