[Zope-CMF] Permissions for CMF content type editing

[Richard Ettema]

I have created a ZClass and included as a content type in a CMF site. It all
works fine when adding a new instance of this ZClass until the owner edits
it and saves changes.

The instance has the correct Owner permissioning of 'View' and 'Modify
Portal Content'. The edit method called saves changes using
manage_changeProperties. The problem is that the edit method expects 'Manage
Properties' permission or a login prompt appears. I thought 'Modify Portal
Content' covers the permissions for Owners to change properties.

Any ideas what I have missed?

Thanks