A quick look on here:
http://www.bhacorp.com/support/atapi/errors3.html#
might shed some light. Look down the list for 'session fixation error', and click the links next to it (in this case 4,5,6).
Is the drive on it's own ide cable, or is it sharing the cable with another device? If it's sharing one of the devices should be master, and one should be slave. If there's nothing else on the cable you might be better off setting it to master rather than cable select. Check what the cdrw was set to.
Try reseating the cables.
Have a look on NEC's website and see if there's a firmware upgrade.
Finally, update your burning software to the latest version.
If you have any, try another kind of disc.
If none of these solutions work it might be time to think about returning it.
Good luck