Configuration Error (Train Fever)

Trying to update Train Fever. After installing Build 5541 I start a new game and it gives me an error.
Configuration error
File: res/config/bud/com_0/1800.bud
EROR availability missing in file com_0/1800.bud
This error is usually caused by bu modding. Some game resources contain semantically incorrect data.
What to do?