Technical difficulties - Ludwigsstadt

On my second day in the Bavarian Forest, I noticed that I had mounted my smallest front chainring the wrong way round, creating a gap large enough for the chain to get caught in. The chain did just that in 50% of cases, but unfortunately I didn't have the right tools with me to fix it. The second problem was the rear brake pads, which still had a lot of material left but were very old, completely dried out, and brittle. The noise was awful, but unfortunately the braking performance was also really poor. Stopover by train from Ludwigsstadt in northern Bavaria to the Ludwigsstadt district of Munich.