NSC abend - non-numeric data

I’m seeing this in a brand-new NSC installation, over-top a long-standing Natural (Win7) environment. Both are at 6.3.13.

The message appears during user-related actions - maintenance and retrieval. Even after displaying user information via direct command.

I have seen a similar abend when logging on from another Win7 machine via NDV to a Unix-based Natural environment. Here both are running 6.3.8.

Is it FSEC-related? Natparms?

Run INPL R to restore Fsec control data.