There is a subtle bug in the CopySupport module that makes it impossible to copy and paste a folder that contains a ZCatalog with CatalogAware objects in indexed in the catalog also in that folder. The reason is as follows, CopySupport calls a hookable method manage_afterClone (which is hooked by CatalogAware). It does so after a copy is made of the object but BEFORE the copy is mounted in the ZODB. manage_afterClone in CatalogAware tries to reindex the object, and in doing so tries to derive its URL for use as the ZCatalog uid by calling absolute_url on the object. This fails of course because the object as yet has no URL because it is not mounted. The error reported is a KeyError on SERVER_URL. To make a long story somewhat shorter, I have a simple patch for this, but there is still one more subtle bit of behavior to take note of: When the ZCatalog is copied, all of its indexed data gets copied. Then the new copies of the objects index themselves. This means that the copied catalog has twice as many objects in it as the original. This bugged me at first, but it makes sense and I don't see any obvious solution that would be consistent. For those interested, the patch is here: http://classic.zope.org:8080/Collector/2205/view -- | Casey Duncan | Kaivo, Inc. | cduncan@kaivo.com `------------------>