I have no luck with CMC media, I have tried a heck of a lot of different brands, and these days only use Japanese made Verbatim. I get them straight from Japan via ebay and they never once have given me any grief. Dual layer (50GB) ones work a treat as well.
I have an old LG BD burner, it is so old it also reads HD-DVD! but it has never let me down with verbatim media.