When loading the game with the German localization, the following errors occur. These errors do not occur when loading the game in English:
Failed to load locale: ["Moshine/locale/de/locale.cfg"] Duplicate key "multi-ore" in property tree at ROOT.entity-name.
Failed to load locale: ["Moshine/locale/de/locale.cfg"] Duplicate key "neodymium" in property tree at ROOT.entity-name.
Failed to load locale: Duplicate key "tile-name" in property tree at ROOT.

I've got the same bug. By removing these lines from moonshine/locale/de/locale.cfg it should work again:
multi-ore=Multi-Erz
neodymium=Neodym
both are under the [item] header.
Also the part:
[tile-name]
webbed_processor_tile=Eingebettete Prozessoren
should be moved to the other [tile-name] block, where the lines
moshine-hot-swamp=Moshine-Trockensumpf
are. And then the [tile-name] header, of course, is only needed once. At least this works for me.

My bad, it's fixed now, thanks for reporting :)