Is it possible that some settings have now become active and i don't mean my own changes. I'am asking because i'am still searching what caused the problems with some Plots that resulted in the last CTD you reported and lead to an Python error after i fixed that CTD. The Python error came from some Python not aware of the MULTI_FEATURE_MOD and CvPlot.getFeatureType() returning NO_FEATURE for a Plot with FEATURE_BAMBOO on it but that is not the only problem with that Plot. I think maybe some outdated settings have now become active or something like that. If not from settings it could come from the recent feature, terrain or bonus changes.