[CLIENT] Unspecified error when patching 5.5

Unspecified Error when patching 5.5 Error occurs when downloading new interface (around 30% step one of two) Running as admin makes no difference Happens every time I try to patch

screenshot: http://prntscr.com/6g7fv5

My internet connection is fine, i can play other games, skype and stream videos/music without a problem