The blood patch is right here mate: http://www.atari.com/us/support/newfaq/thewitcherenhancededition.php?browser=1&osType=&pageDisplay=DOWNLOADSafaik the dvd check has been removed for the original witcher but EE still requires it.
Been lurking in this thread for a while as well. I too have this problem, though the original witcher didnt.Though theres heaps already, heres a comparison of the bug (look at the...