DL won't play back on Plextor?

I backed up a full movie on Verbatim DL media.
Using a Plextor 716A with latest firmware…

The DL plays fine on set top dvd players but is not recognized when I try to play back on the same Plextor that burned it.

Also got a wierd message when I opened up Plextools pro [ to check dvd info on the disk which showed up as empty]telling me that my Plextor 716A was not connected or something wierd…
just sits there flashing amber…
2 flahes every couple seconds…

Plex is fine as I backed up a couple movies before and after same night…
anything ring a bell here?

Some Plex’ are known to not correctly writing within the DL specs. Recognition problems are the outcome. :frowning: