px engine error -15 primodvd bravo sonic

This is just an FYI, no response necessary and I'll not check back,
but posting in hopes that someone will find this and be helped by it
since I couldn't easily find info when tried to get help on this
error.
We have a Bravo Pro disc duplication system with PrimoDVD burn
software and one day everything stopped working (or so it seemed) and