Why Can't I Save my Scenarios?

I've recently come back to Atwar after a long time of not playing. Now, with the new browser-version, I can't save any Scenarios that I put together. The map that I started making just about when I started playing this game (5 years ago, I think? Maybe 4?), and have updated more times than I can since, I can now no longer update or create scenarios for. Every time that I try to do either, it just says that I'm in preview mode, and thus cannot save. Any help? How do I leave preview mode?

Because the html5 editor is not released yet, try using the old version of the game in order to edit/create maps.