Have been trying for hours and hours now... it downloads just fine - snappy quick.  but when i go to install it - it just won't do it. if i do it through software update i get an error that says it "couldn't expand and was corrupted during download".  Have retried probably going on 10x now with no luck. 
Also downloaded the files directly from Apple - at first got checksum errors, then i turned of disk image verification. It started the install process but immediately gave me an unknown error and said to contact the software manufacturer.
I'm not running a developer build or anything, i don't have file vault turned on and have never experienced any issues like this before.
any thoughts on this one?
	
		
			
		
		
	
				
			Also downloaded the files directly from Apple - at first got checksum errors, then i turned of disk image verification. It started the install process but immediately gave me an unknown error and said to contact the software manufacturer.
I'm not running a developer build or anything, i don't have file vault turned on and have never experienced any issues like this before.
any thoughts on this one?
 menu or the files downloaded from apples's servers.  I get the message Could not expand file our in the case of tryng to install from file invalid checksum.