PBase

Hi guys, i have a problem with printing on CD/DVD's An hour ago my cd's were printing fine, then for some strange reason the printer keeps spitting out the CD tray and it wont print on it. I've tried cleaning the tray, re-installing the printer drivers, done a clean cycle, leaving the printer switched off for a few mins, but nothing works. Has anyone else had this problem? and if so, how do i fix it?