On certain DVD's after opening "Any DVD", and proceeding to "Clone DVD2" than title configuration, I click "E:/VIDEO_TS" under video files and I get the following error message: Unable to read files from E:/VIDEO_TS E:/VIDEO_TS/VIDEO_TS.IFO: unable to open file The disk structure is corrupted and unreadable. Please be sure that all required files are available and try again. When I click details: File O E:/VIDEO_TS/VIDEO_TS.IFO 1393 This doesn't happen all of the time - just occasionally. Is the DVD faulty? The dvd will play on the computer and in the dvd player, it just doesn't work under Clone DVD2.