[j-nsp] system login class problem

[nobody]

Hello,

is there something wrong with this configuration?

run show configuration system login class testing 
permissions [ admin admin-control clear configure control field floppy
interface interface-control network reset routing routing-control
shell snmp snmp-control system system-control trace trace-control view
maintenance firewall firewall-control rollback security
security-control access access-control ];

When a user "lab" is assigned to the class "testing",  it gets the
following error after he login:

warning: user "lab" does not have a valid login class
error: Unable to authenticate: bad parameter