problems when running catkin_create_pkg

edit

Hello,

I am currently trying to install ROS, and getting to know the environment by following the well written online tutorials.

First I did a complete new ROS install on my Ubuntu 12.04, by following the install instructions here: wiki.ros.org/hydro/Installation/Ubuntu

After this I dug right into the tutorials wiki.ros.org/ROS/Tutorials

But on the 3. tutorial, wiki.ros.org/ROS/Tutorials/CreatingPackage, I am currently stuck, since I get an error when running catkin_create_pkg. It output this to my shell:

File "/usr/local/bin/catkin_create_pkg", line 4, in <module>
import pkg_resources
File "/usr/local/lib/python2.7/dist-packages/distribute-0.6.28-py2.7.egg/pkg_resources.py", line 2819, in <module>
parse_requirements(__requires__), Environment()
File "/usr/local/lib/python2.7/dist-packages/distribute-0.6.28-py2.7.egg/pkg_resources.py", line 588, in resolve
raise DistributionNotFound(req)

I have already tried different things, like reinstalling the whole ROS, tryign to reinstall the python-catkin-pkg, and bunch of other things. Tried to follow the tutorials from scratch several times, to ensure I wasnt missing something. Read some forums, and can already give some details about the installation:

python -c 'import catkin_pkg; print(catkin_pkg.__file__)'

gives

/usr/share/pyshared/catkin_pkg/__init__.py

Anyone got any clue of how I can fix this error, or maybe where to look? Any help would be greatly appreciated.