Connection to the database has not been successful or your session has ended - try logging in again.<br><br>
If the problem persists - Try changing the personal security on your internet browser to 'medium high'. 
<br><br>There is a possibility that your personal internet security set to 'high' which blocks the program from temporarily storing the login details on your computer.
<br><br><b>Instructions to change browser settings:</b><br>
From your browsers task bar click on: tools -> internet options -> protection of personal information 
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then set the slider bar to 'medium high' .