Yes I have now tried completely formatting and erasing and I have tried an Imation dvd+rw and a TDK+rw. Both will work in standalone player using ricoh to burn, but neither will work with identical projects and preparation, if burnt using the pioneer.
really got me scratching my head. Could pioneer possibly not completely creating the rom booktype? Maybe its incorrectly creating the data when burning? Could the laser intensity vary between ricoh and pioneer?
I might try last piodata firmware version. I currently using the newest firmware
thanks for all your advice!