Hi, I did another test and it seems to be related somehow to number of cities vs. map size. When choosing a smaller map, its more likely from not being happing but I wasn't able to find a real connection in terms of a rule yet.
Also after a long time ( >10min) finally it appears the window is coming back so at least I can say Simutrans is not crashing complete. Thx, Frank -- http://frank.uvena.de/en/
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