Article ID: 1679, created on Feb 7, 2007, last review on May 10, 2014

  • Applies to:
  • Plesk for Linux/Unix



When you are trying to open http://webmail.domain.tld to access IMP Webmail interface, the following error appears:

        Registry objects should never be cloned.



This issue is caused by  zend.ze1_compatibility_mode turned On. This setting is enabled on Fedora Core 4 by default. See for more information



 Switch zend.ze1_compatibility_mode Off in php.ini and restart Apache:

          zend.ze1_compatibility_mode = Off

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