Hello there,
Re the "Unreadable Data" thing....
One way to get to at least finalise the disc (which means it should play okay)
Place the disc in the tray but DON`T close it.
Hold down the Record button on the remote `til the tray shuts
It will then try reading the disc and should then show record/pause mode on the telly.
Press stop on the remote and this should take you back into the root menu thing showing the titles already on the disc
Press the up arrow on the remote `til you get to the screen where you can select "finalise"
Good luck!
Paul
PS What discs are you using?