- Nspire Navigator System 30user NAVNSCRK302L1 Manual
258 Troubleshooting
Calculator error messages
Invalid User Name  In the Add Student dialog box, 
you either did not enter a user 
name or you did not meet the 
user name requirements. User 
names must contain 3 to 12 
letters and/or numbers.
Invalid Password  In the Add Student dialog box, 
you either did not enter a 
password or you did not meet 
the password requirements. 
Passwords must contain 3 to 12 
letters and/or numbers.
No Classes Selected You do not have any classes 
selected for the student you are 
creating or editing.
Error message Possible causes or solutions
Communication 
failed
Check the cable
• The calculator is not 
connected to the hub and/or 
USB Silver Edition cable 
correctly. Check the cable 
connections to the hub and 
the calculator, then try 
again.
•
(Student point of view only) The 
teacher hasn’t started the 
TI-Navigator™ system on his 
or her computer. Wait until 
the teacher starts 
TI-Navigator and the class, 
then try again.
Class not started
(Student point of view only) The 
teacher hasn’t started the class in 
the TI-Navigator™ system. Wait 
until the teacher starts the class 
and try again.
Error message Possible causes or solutions










