To fix this issue, please open the Utilities menu in the admin area > Admin Settings .. This should display the settings page ... scroll to the bottom and click 'Save changes' (without actually making any changes) ... This should fix the above issue.
If this fix doesn't work, you could try editing the 'config.php' file of your app in a text editor. Find the line starting with:
Code: Select all
$appURI
Code: Select all
$appURI = '';