CiviCRM Community Forums (archive)

I have set up my Membership Organization in the Contacts/New Organization page. However, when I go to Administer/CiviMember/Membership Types to set up our types of membership, I get this error:

Fatal error: Class 'HTMLPurifier_DefinitionCache_Decorator_Cleanup' not found in /nfs/c02/h09/mnt/25571/domains/mana.org/html/drupaltest2/sites/all/modules/civicrm/packages/IDS/vendors/htmlpurifier/HTMLPurifier/DefinitionCacheFactory.php on line 84

when I EITHER click the "search" button beside the "Membership Organization" field or when I try and save the new Membership Type by just typing the name of the organization in the "Membership Organization" field.

I have set Drupal and CiviCMS up on another domain which has a different host, and it works just fine, but this one (of course, the main one I need!) is not!

Thanks,

Tina