I am having the same problem. I get an error every time I try to burn a disc. I think the “A04” in the original post came from the release title on the current Dell download page for the D56A driver. It states:
“Removable Storage: Sony DW-D56A slim 8x DVD+/-RW, Firmware, Windows 2000, Windows XP, Multi Language, Multi System, v.PDS7 (Win), A04”
Can anybody help?