I hope someone can shed some light here, Upgraded to PHP 5.3, plesk login page now displays "The file index.php is part of Plesk distribution. It cannot be run outside of Plesk environment." My understanding is that this is caused either by a bad license file (doubtful, since everything worked fine before php upgrade), or else plesk does not like the php environment. I copied php.ini settings as closely as possible from the original PleskPHP5 directory. I installed php 5.3 using php.net binary installer into a new directory, then updated php.ini to get it working under iis using fastcgi, then updated php.ini with settings as per plesk php config. Something is still off. Is anyone able to help me get plesk control panel back up and running -- Thanks... In the meantime I may try re-installing the license... not sure what else to try...??