I could not figure out why no dvd backup program would work until I tried Toast 7 TITANIUM.
No other program displayed an error message.
Toast had a problem with many files and .hotfiles.btree .
The other files had been downloaded by me so I erased them one at a time each time...
http://gimp-print.sourceforge.net/
I am a new Mac user also and and wanted to use my very old laserjet IIId. At http://gimp-print.sourceforge.net/MacOSX.php3 , I got support for my very old parallel printer now connected thru a usb converter cable to my usb only Mac Mini.