Hi all Turns out that one major cause of my ZCatalog hassles was that I had an index called 'URL'. That is, my ZClass had a property called URL, and I was indexing on this. It makes everything in the ZCatalog vanish. "No objects in Catalog". Deleting this index makes everything re-appear again! :) It seems that having indexes with names that appear in the REQUEST object is a definite no-no. Regards, Jean