It happens when I open the file browsing window. What do you want? I can give you what Terminal says during running Simutrans:
Calculating textures ...done
Creating cities ...
Creating factories ...
Distributing 1 tourist attractions ...
Preparing startup ...
Loading BDF font 'font/Prop-Latin1.bdf'
Loading BDF font font/Prop-Latin1.bdf with 256 characters
Show banner ...
Bus error: 10
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I think you mean something different!