Troubleshooting
Find what you see in the left column. The page in the right column explains the cause and what to do.
| What you see | Likely cause | See |
|---|---|---|
A value shows … or ? instead of a number | The value has not arrived yet, did not arrive in time, or arrived with a bad quality. | Values that are not available, Quality |
| Objects on the screen turn pink | No connection to the server, the driver or the device. | Lost communication |
| A command is not sent or is refused | Missing permission, manual or simulated signal, another user controls the area, no communication, a command still in progress, or a command that is too old. | When a command is refused, Command reason codes |
| YTCC does not start and names a port | Another program uses one of the YTCC ports. | Ports YTCC listens on |
Project database is incompatible with this version, or a program stops with status failed | The database and the programs have different schema versions. | When a database does not match the programs |
| A user cannot sign in although the password is right | The account is locked after failed attempts, or the sign-in rate limit was reached. | Lockout, Sign-in rate limit |
| The login window says that the password has expired | The password is older than the maximum age. | Password and lockout policy |
| A screen package is not imported | The package has errors, is too large, or is not an uncompressed or DEFLATE zip file. | Limits |
| A process restarts again and again in Processes | The process stops and the process manager restarts it. | When a process stops unexpectedly |
| The interface does not open from another computer | The web interface listens only on the server itself (127.0.0.1). | Ports and network |