[Zope] Cache values may only be in one cache

I'm getting the following error: "Cache values may only be in one cache" I'm getting this error every time I refresh my skin product. So I have to remember to restart zope every time I make a change. I'm running Plone 2.5.2 and Zope 2.9.6 On this page: http://plone.org/documentation/error/one_cache Wichert Akkerman says: """Zope no longer supports product refreshing fully. For products using the component architecture it will probably never work. For others it can break as well. This is a Zope matter, not a Plone problem.""" Is this really true? Wouldn't it be an idea to remove the functionality completely then?