This error happens very often when I increase the number of inhabitants in the cities. (Esse erro acontece com muita frequência quando vou aumentar o número de habitantes nas cidades.)
Which version, which pak set?
There have been also addons with illegal definitions (like three rotations) which could cause crashes.
Was using the version 120.0.0, revision 71 and do not remember, I downloaded the version that this forum in the 120.1.3 and I'm reviewing 7753. Package I always use and normal 128. (Estava usando a versão 120.0.0, revisão 71 e não lembro, baixei a versão que esta no forum a 120.1.3 e estou com a revisão 7753. Pacote que sempre uso e o 128 normal.)
If you got confused, I apologize because I'm using google translator. (Se ficou confuso, peco desculpas pois estou usando o tradutor do google.)
Does the crash occur with the current release? If so then try a nightly build to see if it still crashes.
This should be fixed since 120.1, see this commit
https://github.com/aburch/simutrans/commit/f9194aa553969e4d552b42aee6e647f460c682b5
from january 2015.