Note, however, that the problem has disappeared on the original system (a VirtualBox VM) that exhibited it. I had to do a fresh installation to re-create it. The problem disappeared after I rebooted the new installation. Deleting the ~/.nedit directory did NOT cause the problem to re-appear, nor did uninstalling and re-installing the nedit package.
Paul,
I'm attaching the backtrace you wanted.
Note, however, that the problem has disappeared on the original system (a VirtualBox VM) that exhibited it. I had to do a fresh installation to re-create it. The problem disappeared after I rebooted the new installation. Deleting the ~/.nedit directory did NOT cause the problem to re-appear, nor did uninstalling and re-installing the nedit package.