Alright those don't match, which is the problem. Do you have anti-virus or something that might be messing with the update process? If so can you check the logs to see if it's miss flagging something? Try adding an exception to our directory structure as well and see if that helps.

We've seen some crappier AV vendors in the past flag our update executable as suspicious. If that does help can you let me know the vendor and what it's flagging it as?