The file index.php is part of Plesk distribution. It cannot be run outside of Plesk e

[testuser]

i have plesk 7.6.1 version installed and php 4.2.2
i upgraded php to 4.4.4. my web hosts are running without any problem but plesk control panel is giving this error.
The file index.php is part of Plesk distribution. It cannot be run outside of Plesk environment.
why i have this prblem?