- Nspire Navigator System 30user NAVNSCRK302L1 Manual
Troubleshooting 257
Computer error messages
Error message Possible causes or solutions
TI-Navigator 
Network Unavailable
The TI-Navigator™ system cannot 
locate appropriate network 
hardware (for example, an access 
point and one or more hub). 
Check your hardware 
connections. If you still see this 
error, open TI-Network Manager 
and make sure your network 
hardware is properly configured.
Cannot start a class 
session
The TI-Navigator™ system cannot 
locate the appropriate network 
hardware (for example, an access 
point and one or more hubs). 
Check your hardware 
connections connections. If you 
still see the error, open 
TI-Network Manager and make 
sure your hardware is properly 
configured.
There was a problem 
reading your 
equation around 
character 
X.
In the Activity Center tool, you 
are not using the appropriate 
syntax in an equation. Equations 
must use uppercase letters for 
variables, lowercase letters for 
functions, and not have any 
spaces.
Invalid First Name  In the Add Student dialog box, 
you did not enter the student’s 
first name or you included invalid 
characters in the first name.
Invalid Last Name  In the Add Student dialog box, 
you did not enter the student’s 
last name or you included invalid 
characters in the last name.










