Take a look at the attached pictures. I cannot plug my MS into either the HPWC or my UMC this morning. There is some sort of mechanical interference. It looks like a piece of one of the charge port power contacts broke off into the HPWC connector. See the pictures below. Tesla is on the way tomorrow morning with a new charge port and HPWC cable. Great support! My MS was delivered September 2012 and is Signature #37. The folks at Tesla told me the charge port has been updated a few times since my car was built. Has anyone else had anything like this happen?