Digital BW, The Print

QT was working fine a few days ago.  Tonight it was NO GO.  I removed and reinstalled and 
now get an error message "-50' can't install printer".  When I go to add QTR for my Epson 
2200, it does appear in the drop down box.  Epson driver prints fine and I can see the printer 
via the Epson utility.

I  ran the QT unintall program and reinstalled but get the same error messae on trying to add 
the 2200.

I then reset the printer system.  The Epson 2200 add was just fine and I can print through it, 
but still get the error message with QTR's add.

I know that Mac released a security update recently and some of the Lightroom  Beta testers 
have complined of problem.  Could this be the cause?

Any thoughts or help will be appreciated.

I could live without the Epson drivers but not QTR!!

David