SAF Burner and Error Message

My Smart and Friendly SAF CD-RW 4424A drive with firmware 1.18 is having problems when writing RAW-DAO. I get this error message every time when I try to use this option. CloneCD says that my drive can support RAW-DAO but I get this error message : HARDWARE ERROR: TIMEOUT ON LOGICAL UNIT (4:0x3e:0x02). What does this mean?