Switching language in the in-game setting window crashes the engine.
System is Manjaro Linux; engine version is release-20200202.

Steps to produce:

1. ./launch-game.sh; the engine starts in English.
2. "Settings" -> "Language"; switch from "English" to "chinese".
3. Click "Back" and the engine crashes; output:

Loading mod: yr
Exception of type `System.IO.FileNotFoundExcept

We put a lot of effort into building the make check and make test commands to automatically identify errors like this.

Originally posted by @pchote in OpenRA/d2#140 (comment)

OpenRA/OpenRA#15852 is not mentioned anywhere in the current docs. Imho we should include it in this new iteration of the docs.

The CC-BY license is a good choice for the assets for this project. And as long as there is only a single artist whose assets are involved, a generic crediting message is enough.

The problem comes in if multiple additional artists starts contributing and/or people would start derivative works of the assets within the project, for example recoloring/remixing tiles to extend the tileset. There sh