Stumped, ND-3500a won't write packets

The ND-3500 doesn’t packet write with dvd+rw’s and InCD. The drive seems to be OK with bulk writing and other tasks.

I tried an older BTC DVDRW1008 in the same computer and setup and it did just fine with the packet writing stuff.

I’ve bumped the Nec ND-3500 firmware to the latest, 2.19. But no change.

Any Ideas?

I had a similar problem, and it was solved in this thread:

I hope it helps.