Thread:Translating talk:StatusNet/5c3f2ca6f3b12e9a82db73d6fb7a2d6a65846608-Theme contains unsafe file ext („Theme enthält unsichere Dateierweiterungen; könnte unsicher sein.“)/reply

I thought the same, and chose to not translate it. It's not completely reduntant, though. It clarifies that the unsafe file extension may contain unsafe data, but does not necessarily contain unsafe data.