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		Try changing the fluid simulators from Floody to Classic, if it helps. I have a feeling the Floody simulator is still faulty and it definitely causes a lot of HDD and CPU action, because it floods large areas.
I'll have a look at the crashdump later in the day.
	
	
	
	
	
 
 
	
	
	
		
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		but i was not doing anything with water. 
	
	
	
	
	
 
 
	
	
	
		
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		The crashdump doesn't say anything much, it is the small crashdump with almost no data other than the stack trace. So I know unloading a chunk failed, but the reason is in the stars. The big crashdump wouldn't have helped much, though, because this is probably a memory-overwrite issue - someone somewhere is writing in memory that doesn't belong to them. The hardest bug to find.