The change:
nbexec=/usr/share/netbeans/platform12/lib/nbexec by nbexec=/usr/share/netbeans/platform13/lib/nbexec
works!!
The change:
nbexec= /usr/share/ netbeans/ platform12/ lib/nbexec /usr/share/ netbeans/ platform13/ lib/nbexec
by
nbexec=
works!!