- Plesk 11.x for Linux
The error occurred while trying to log in to Plesk:
Error: The file /opt/psa/admin/htdocs/login.php3 is part of Plesk distribution. It cannot be run outside of Plesk environment
When refreshing the page, Plesk loads fine.
Plesk Mobile extension installed in Plesk.
Opening Extensions > Plesk Mobile Center results in similar error.
This is a software issue in Plesk Mobile extension with internal id #PPPM-4207 which has already been fixed.
Remove extension manually:
/usr/local/psa/bin/extension --uninstall plesk-mobile
You can download updated extension archive using this link .