K3B unable to fixate disc

I have a clean install of OS 11.4 64bit on my system with K3B installed from packman.

Trying to burn files to a disc with the option of no multisession I am getting the error message at the end of the burn “unable to fixate disc”

Any ideas what might be the cause of this?

The first time I tried burning it said it did not have permission so I used the K3B wizard to change permissions.
Now it simply says “unable to fixate disc”

hold the phone . . . it seems I just have a couple of hundred discs that k3b doesn’t like.
Changing to a different brand disc and it is fixated without problem.