'gi.repository.Cogl' object has no attribute 'path_round_rectangle'

[Angel Guzman Maeso]

I get this trace in Utopic Unicorn with Pitivi 0.93

Traceback (most recent call last):
  File "/usr/lib/x86_64-linux-gnu/pitivi/python/pitivi/timeline/elements.py", line 89, in do_paint
    Cogl.path_round_rectangle(0, 0, self.props.width, self.props.height,
  File "/usr/lib/python2.7/dist-packages/gi/module.py", line 320, in __getattr__
    return getattr(self._introspection_module, name)
  File "/usr/lib/python2.7/dist-packages/gi/module.py", line 139, in __getattr__
    self.__name__, name))
AttributeError: 'gi.repository.Cogl' object has no attribute 'path_round_rectangle'

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: pitivi 0.93-4
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.2-0ubuntu2
Architecture: amd64
CurrentDesktop: Unity
Date: Thu May 8 17:56:17 2014
InstallationDate: Installed on 2014-05-08 (0 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
SourcePackage: pitivi
UpgradeStatus: No upgrade log present (probably fresh install)