Session fixation error on benq1620

hello all. am new to this but have had no probs up until now.

trying to burn a dvd using nero on a benq1620.

can burn cds fine and have burnt dvd’s in the past onto tdk -r but now am trying to use a spindle of tdk +r. they are ricohjpn 01.

Everytime i try to burn i get this session fixation error, cant work out what the hell is going on. files attatched are a nero infotool report and an error report from nero recode.

have done the benq firmaware upgrade to b7v9 and am going crazy.

any help appreciated.