I get this error when I try to register new user.
Plone 2.5.3 / zope 2.10.3
I manually fixed PlonePAS as instructed. It throws KeyError: 'tokens' when not fixed at same place.

Traceback (innermost last):
Module ZPublisher.Publish, line 115, in publish
Module ZPublisher.mapply, line 88, in mapply
Module ZPublisher.Publish, line 41, in call_object
Module Products.CMFFormController.FSControllerPageTemplate, line 90, in __call__
Module Products.CMFFormController.BaseControllerPageTemplate, line 28, in _call
Module Products.CMFFormController.ControllerBase, line 245, in getNext
- __traceback_info__: ['id = join_form', 'status = success', 'button=Register', 'errors={}', 'context=<PloneSite at plone>', 'kwargs={}', 'next_action=None', '']
Module Products.CMFFormController.Actions.TraverseTo, line 38, in __call__
Module ZPublisher.mapply, line 88, in mapply
Module ZPublisher.Publish, line 41, in call_object
Module Products.CMFFormController.FSControllerPythonScript, line 104, in __call__
Module Products.CMFFormController.Script, line 145, in __call__
Module Products.CMFCore.FSPythonScript, line 108, in __call__
Module Shared.DC.Scripts.Bindings, line 311, in __call__
Module Shared.DC.Scripts.Bindings, line 348, in _bindAndExec
Module Products.CMFCore.FSPythonScript, line 164, in _exec
Module None, line 20, in register
- <FSControllerPythonScript at /plone/register>
- Line 20
Module <string>, line 10, in _facade
Module AccessControl.requestmethod, line 63, in _curried
Module Products.CMFCore.RegistrationTool, line 159, in addMember
Module Products.PlonePAS.tools.membership, line 74, in addMember
Module Products.PlonePAS.tools.memberdata, line 168, in setMemberProperties
Module Products.PlonePAS.sheet, line 100, in setProperty
Module Products.PlonePAS.plugins.property, line 175, in setPropertiesForUser
ValueError: Invalid value: PloneSVNaccessVersioning does not conform to tokens