Hi Alexander, I am going to take this back to the Zope list... Have you examined the STUPID_LOG_FILE? It seems you're showing us the error from an interactive session, but there should be more information in the log file. It seems you've narrowed this down in some fashion to Yihaw. How did you do that, what brought you to that conclusion? What class does the pickled data in the "could not load oid" traceback seem to be an instance of (as per STUPID_LOG_FILE)? ----- Original Message ----- From: "Alexander Chelnokov" <alex@orto.unets.ru> To: "Chris McDonough" <chrism@digicool.com> Sent: Wednesday, November 08, 2000 1:43 PM Subject: Re[4]: [Zope] Is data.fs corrupted? Hello Chris, Wednesday, November 08, 2000, 11:23:44 PM, you wrote: CM> Your ZODB isn't corrupted... it's a configuration issue. You've deleted a CM> class without deleting all of its instances from the ZODB, most likely. I definitely didn't do that. And for example Yihaw directory is present in Products directory and all its class are. I can add any object form Yihaw family and while i in the same session all is working like a charm. But if i close the browser, next attempt to access the object from another session shows the broken object. CM> You can probably figure out which classes they are, reinstall the products I failed to reintstall the products - the error message was in my previous message. I tried to do this over existing product and after its removal with the same result. Looks like some parts of a deleted product persist in ZODB. CM> they come from, and delete their instances, thereby making the errors go I just removed Yihaw, packed the database and tried to import it again and got the same error... Error Type: Could not load oid =², pickled data in traceback info may contain clues Error Value: None -- Best regards, Alexander N. Chelnokov Ural Scientific Institute of Traumatology and Orthopaedics 7, Bankovsky str. Ekaterinburg 620014 Russia ICQ: 25640913