The fact that it doesn't crash the .exe file is actually very bad... it will be more difficult to figure out which register the ceiling value for buildings is read from, as 127 is stored in many different registers... try to increase it to 255 or 256 in the .xml file - then try to crash the .exe and look at the log!
To be honest... I'm scared to break it))) because I don't know how to fix it =(