Hi Glenn...
Sorry you ran into a snag. Looks like the tutorial is inop at the moment, which may or may not be the source of the error you are reporting. [I'm not the czar of the tutorials dept. or know the underlying tech details.]
After hunting around a bit I found a temp workaround Swampy (the author) posted. It's an abbreviated "thread version" of the info contained in the tutorial here:
http://www.retouchpro.com/forums/sho...threadid=13348
Hope this gets you moving for the time being.
~Danny~