Till now, I had around 15 clients that the same issue. After installing the update KB2859537, they cannot open / install programms, System Info, Computer Properties all just don't open, no error msg.
They are receiving 0xc0000005 error.
Till Microsoft will wake up, we offer them the next sollution: to uninstal this update. After the restart, Windows is offering to you again to instal this update, but we don't do it.
Waiting for an official solution from MS.