installation in Trac 0.12 crashes everything

[fazend]

This is what I see after upgrade to Trac 0.12:

Traceback (most recent call last):
  File "build/bdist.linux-i686/egg/trac/web/main.py", line 510, in _dispatch_request
    dispatcher.dispatch(req)
  File "build/bdist.linux-i686/egg/trac/web/main.py", line 196, in dispatch
    chosen_handler)
  File "build/bdist.linux-i686/egg/trac/web/main.py", line 343, in _pre_process_request
    chosen_handler = filter_.pre_process_request(req, chosen_handler)
  File "build/bdist.linux-i686/egg/tracsectionedit/web_ui.py", line 36, in pre_process_request
    and 'WIKI_MODIFY' in req.perm:
  File "build/bdist.linux-i686/egg/trac/perm.py", line 548, in has_permission
    return self._has_permission(action, resource)
  File "build/bdist.linux-i686/egg/trac/perm.py", line 562, in _has_permission
    check_permission(action, perm.username, resource, perm)
  File "build/bdist.linux-i686/egg/trac/perm.py", line 449, in check_permission
    perm)
  File "build/bdist.linux-i686/egg/privatetickets/policy.py", line 34, in check_permission
    'TRAC_ADMIN' in perm:
  File "build/bdist.linux-i686/egg/trac/perm.py", line 548, in has_permission
    return self._has_permission(action, resource)
  File "build/bdist.linux-i686/egg/trac/perm.py", line 562, in _has_permission
    check_permission(action, perm.username, resource, perm)
  File "build/bdist.linux-i686/egg/trac/perm.py", line 449, in check_permission
    perm)
  File "build/bdist.linux-i686/egg/trac/perm.py", line 284, in check_permission
    get_user_permissions(username)
  File "build/bdist.linux-i686/egg/trac/perm.py", line 354, in get_user_permissions
    for requestor in self.requestors:
  File "build/bdist.linux-i686/egg/trac/core.py", line 70, in extensions
    return filter(None, [component.compmgr[cls] for cls in extensions])
  File "build/bdist.linux-i686/egg/trac/core.py", line 205, in __getitem__
    component = cls(self)
  File "build/bdist.linux-i686/egg/trac/core.py", line 111, in maybe_init
    init(self)
  File "build/bdist.linux-i686/egg/tracrpc/api.py", line 261, in __init__
    __import__('tracrpc', ['__version__']).__version__))
  File "build/bdist.linux-i686/egg/tracrpc/__init__.py", line 10, in <module>
    #
AttributeError: 'module' object has no attribute 'JsonRpcProtocol'

What to do? When I delete the component - everything works fine.

[osimons]

(In [7957]) XmlRpcPlugin: Follow-up to r7941. Forgot to redefine __all__ in the module when json was not available, and any attempt to load the name would of course fail. Fixes #7135. Sorry :-)

[fazend]

Now works fine, thanks!