Yes. That is the last posibility. But look at this: I asked BenQ EU support about this problem and they said they would suggest to me that I use following DVD-RW: CMC 4x , JVC 4x , Optodisc 4x , Prodisc 4x , Ritek 4x.
So I asked again, if there is some incompatibility with MCC 01RW4X (because they suggest to use another discs) and they replied:
No manufacturer of DVDRewriters supports all discs on the market , this is also not possible since there is limited space in the firmware available .
We support a wide range of popular discs. There are lots of online internet webshops that sell a large range of DVD Discs.
What does this mean? But this MCC 01RW4X is on their supported media list...