[Zope] Problems reverting from Zope 2.2

After installing 2.2b1 and finding it doesn't work well enough yet I tried to revert back to 1.1.7 This seemed to work ok except somethings are broken in the control_panel. MailHost and ZCatalog can't be accessed Clicking on them in the control_panel results in a resource not found error. This is ok except I can't delete other product which rely on these products. How do I get out of this mess?