Don't be discouraged, guys... 0AD's bar is high in many aspects. We just need to be here, working until we achieve professional quality.   Apart from the campaign of  "lolly poppy" There's the idea of the learning campaign. All of that will take time; ideally, we should start writing a generic script for a presentation of the next release. That's how we test audio.  

Here is the latest version post-Atlas 1.13.0. The main thing is a button that was asked for while testing 1.12.0: after you convert a map, you can now open the converted copy in the target game's Atlas without leaving post-Atlas - to fix there what post-Atlas cannot, and to save - and post-Atlas follows it until it comes back.  There is also a more detailed preview of findings in 2D and 3D. Hope this tool can be useful when mapping or converting older maps! CHANGELOG.md post-atlas-1.13.0.zip

It gives me the same error when I reload it and when I accept it

You are right - it is actually useless information just describing the map diameter in meters. I replaced it by a radial distance of the object from the playable area. Please see the next version...

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