in map xml (it is in config folder) just remove these 3 lines for now that start with <densityHeight> and end with </densityHeight>, at he beginning. If you are using the iron mine, might need to add the line in the middle to the densityHeight.xml from multifruit folder, just under the line with densityHight and before the first hightType (just the line in the middle, not the first and last one). Update will come hopefully tommorrow.