Can't help developing everpad

[e2jk]

I had everpad installed from the PPA and working fine. I've followed the instructions on the wiki, but after sudo python setup.py develop I get the following errors:

emilien@galileo:~/devel/everpad$ everpad
Traceback (most recent call last):
  File "/usr/bin/everpad", line 9, in <module>
    load_entry_point('everpad==2.5dev', 'gui_scripts', 'everpad')()
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 337, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2279, in load_entry_point
    return ep.load()
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 1989, in load
    entry = __import__(self.module_name, globals(),globals(), ['__name__'])
  File "/usr/lib/pymodules/python2.7/everpad/pad/indicator.py", line 3, in <module>
    from PySide.QtCore import Slot, QTranslator, QLocale, Signal, QSettings, QT_TRANSLATE_NOOP, QLibraryInfo
ImportError: libpyside-python2.7.so.1.2: cannot open shared object file: No such file or directory

Seems like it can't find version 1.2 of PySide. Which is weird, since during the install process it mentioned:

Installed /home/emilien/devel/everpad
Processing dependencies for everpad==2.5dev
Searching for PySide==1.2.1
Best match: PySide 1.2.1
Processing PySide-1.2.1-py2.7.egg
PySide 1.2.1 is already the active version in easy-install.pth
Installing pyside_postinstall.py script to /usr/local/bin
Installing pyside-uic script to /usr/local/bin

I've deinstalled the development version, but now I still keep this library version error when trying to run from the PPA (even after removing and adding the PPA package again).

I'm a bit lost ;) Any suggestion on what I should do to be able to run the development version? Running Ubuntu 12.04