well, not much to say - first obvious issue is that the localization also translates bb-tags - something wich shouldn't happen at a properly coded parser, wich should differentiate between text&code parts!
Parser Issue
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the next is a crash at exact the same time after the task to mine 9 coal with the ore extractor is finished!
Crash
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Edit:
breaks at completion of the whole quest and not a task of it!
Regarding the [Farbe=...] issue - this was a localization error by one of the translators who wasn't aware that it shouldn't be translated. I fixed the problematic strings (at least those I could find) on Crowdin.