Symptoms

Internal error while creating subscription or subdomain:

    PHP Fatal error:  require_once() [<a href='function.require'>function.require</a>]: Failed opening required 'tomcatmng.php' (include_path='C:\\Program Files (x86)\\Parallels\\Plesk\\admin\\panel\\application/library/;C:\\Program Files (x86)\\Parallels\\Plesk\\admin\\panel\\application/externals/;C:\\Program Files (x86)\\Parallels\\Plesk\\admin\\smb\\application/library/;C:\\Program Files (x86)\\Parallels\\Plesk\\admin\\smb\\application/externals/;C:\\Program Files (x86)\\Parallels\\Plesk\\admin\\plib;C:\\Program Files (x86)\\Parallels\\Plesk\\admin\\smb\\application\\library;C:\\Program Files (x86)\\Parallels\\Plesk\\admin\\plib\\api-rpc;C:\\Program Files (x86)\\Parallels\\Plesk\\admin\\javascripts;C:\\Program Files (x86)\\Parallels\\Plesk\\admin\\plib\\locale;C:\\Program Files (x86)\\Parallels\\Plesk\\admin\\auto_prepend;C:\\Program Files (x86)\\Parallels\\Plesk\\admin\\htdocs\\domains\\databases\\phpMyAdmin;C:\\Program Files (x86)\\Parallels\\Plesk\\admin\\plib\\pear;C:\\Program Files (x86)\\Parallels\\Plesk\\admin\\compat') in C:\\Program Files (x86)\\Parallels\\Plesk\\admin\\plib\\PhDomain.php on line 771

Cause

Absent file C:\\Program Files (x86)\\Parallels\\Plesk\\admin\\plib\ omcatmng.php .

Resolution

Make sure that file C:\\Program Files (x86)\\Parallels\\Plesk\\admin\\plib\ omcatmng.php exists phisically. Restore it from Plesk distributive if it is nessesary.