Hello, I have created a small tool for CMF to count how many times a specific object has been viewed. It's very simple. It works by a call I have added to my main_template.pt that calls the tool with the URL of recent object and counts up by 1. Now from time to time we see the following error: Site Error An error was encountered while publishing this resource. ZODB.POSException.ConflictError Sorry, a site error occurred. Traceback (innermost last): Module ZPublisher.Publish, line 150, in publish_module Module Products.Localizer, line 58, in new_publish Module ZPublisher.Publish, line 127, in publish Module Products.Localizer, line 58, in new_publish Module ZPublisher.Publish, line 127, in publish Module Products.Localizer, line 58, in new_publish Module ZPublisher.Publish, line 127, in publish Module Products.Localizer, line 58, in new_publish Module ZPublisher.Publish, line 122, in publish Module Zope.App.startup, line 142, in zpublisher_exception_hook Module ZPublisher.Publish, line 102, in publish Module Zope.App.startup, line 200, in commit Module ZODB.Transaction, line 235, in commit Module ZODB.Transaction, line 349, in _commit_objects Module ZODB.Connection, line 300, in commit ConflictError: database conflict error (oid 000000000001c065, class Products.CMFCounter.CMFCounterTool.CMFCounterTool) What is causing this error ?? Have I made some mistakes in the code of my tool ? Any hints - because the error is really annoying in a production site ;-) Greetings, Gitte Wange