Pyside установка не удалась (Python 2.7.4)

Я только что обновился до Ubuntu 13.04 (бета) и получаю сообщение об ошибке при попытке установить pyside в Virtualenv (python 2.7.4) с помощью pip:

error: Failed to locate the Python library /usr/lib/libpython2.7.so.1

У кого-нибудь есть идеи? Я пробовал предыдущие версии, а также версию dev, но все же не повезло.

РЕДАКТИРОВАТЬ: Журнал консоли для post_install

(monster)tony@tonyubuntu:~/Downloads/pyside-setup$ python pyside_postinstall.py -install
PySide package found in /home/tony/Downloads/pyside-setup/PySide...
Patched rpath in /home/tony/Downloads/pyside-setup/PySide/QtUiTools.so to /home/tony/Downloads/pyside-setup/PySide.
Patched rpath in /home/tony/Downloads/pyside-setup/PySide/QtCore.so to /home/tony/Downloads/pyside-setup/PySide.
Patched rpath in /home/tony/Downloads/pyside-setup/PySide/QtTest.so to /home/tony/Downloads/pyside-setup/PySide.
Patched rpath in /home/tony/Downloads/pyside-setup/PySide/QtHelp.so to /home/tony/Downloads/pyside-setup/PySide.
Patched rpath in /home/tony/Downloads/pyside-setup/PySide/QtXml.so to /home/tony/Downloads/pyside-setup/PySide.
Patched rpath in /home/tony/Downloads/pyside-setup/PySide/QtSql.so to /home/tony/Downloads/pyside-setup/PySide.
Patched rpath in /home/tony/Downloads/pyside-setup/PySide/QtGui.so to /home/tony/Downloads/pyside-setup/PySide.
Patched rpath in /home/tony/Downloads/pyside-setup/PySide/shiboken to /home/tony/Downloads/pyside-setup/PySide.
Patched rpath in /home/tony/Downloads/pyside-setup/PySide/QtDeclarative.so to /home/tony/Downloads/pyside-setup/PySide.
Patched rpath in /home/tony/Downloads/pyside-setup/PySide/QtSvg.so to /home/tony/Downloads/pyside-setup/PySide.
Patched rpath in /home/tony/Downloads/pyside-setup/PySide/QtNetwork.so to /home/tony/Downloads/pyside-setup/PySide.
Patched rpath in /home/tony/Downloads/pyside-setup/PySide/QtScriptTools.so to /home/tony/Downloads/pyside-setup/PySide.
Patched rpath in /home/tony/Downloads/pyside-setup/PySide/QtScript.so to /home/tony/Downloads/pyside-setup/PySide.
Patched rpath in /home/tony/Downloads/pyside-setup/PySide/QtWebKit.so to /home/tony/Downloads/pyside-setup/PySide.
Patched rpath in /home/tony/Downloads/pyside-setup/PySide/phonon.so to /home/tony/Downloads/pyside-setup/PySide.
Patched rpath in /home/tony/Downloads/pyside-setup/PySide/QtXmlPatterns.so to /home/tony/Downloads/pyside-setup/PySide.
Patched rpath in /home/tony/Downloads/pyside-setup/PySide/QtOpenGL.so to /home/tony/Downloads/pyside-setup/PySide.
PySide package successfully installed in /home/tony/Downloads/pyside-setup/PySide...

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