Traceback (most recent call last):
  File "ccp.py", line 15, in <module>
    import ccpublisher.const as const
  File "/home/ouspensky/Scrivania/ccPublisher-2.2.1/ccpublisher/const.py", line 8, in <module>
    import p6.api
  File "/home/ouspensky/Scrivania/ccPublisher-2.2.1/p6/__init__.py", line 29, in <module>
    import metadata
  File "/home/ouspensky/Scrivania/ccPublisher-2.2.1/p6/metadata/__init__.py", line 6, in <module>
    import adapters
  File "/home/ouspensky/Scrivania/ccPublisher-2.2.1/p6/metadata/adapters.py", line 7, in <module>
    import zope.component
  File "/home/ouspensky/Scrivania/ccPublisher-2.2.1/zope/component/__init__.py", line 23, in <module>
    from zope.component.interfaces import IComponentArchitecture
  File "/home/ouspensky/Scrivania/ccPublisher-2.2.1/zope/component/interfaces.py", line 24, in <module>
    from zope.exceptions import NotFoundError
  File "/home/ouspensky/Scrivania/ccPublisher-2.2.1/zope/exceptions/__init__.py", line 37, in <module>
    from zope.exceptions._notfounderror import NotFoundError, INotFoundError
  File "/home/ouspensky/Scrivania/ccPublisher-2.2.1/zope/exceptions/_notfounderror.py", line 21, in <module>
    from zope.interface.common.interfaces import IKeyError
  File "/home/ouspensky/Scrivania/ccPublisher-2.2.1/zope/interface/common/interfaces.py", line 80, in <module>
    classImplements(OverflowWarning, IOverflowWarning)
NameError: name 'OverflowWarning' is not defined