I right-click on DVD+RW drive, and at first will see option to "erase" this disc. I select same, and error message appears, saying something about another program attempting to record using this drive or something like that. I unchecked Windows Media player as default DVD player, rebooted. I get same results. One chance at "erase" on right-click menu, error, than the option never appears again on menu. Tried "Erase" button in "Record-Now" program, and get same error message. Any ideas on this?