Blended Cities fails to run in 2.70

[hellocatfood]

I'm running Blender 2.70 on Ubuntu 13.10. I have copied the blended_cities directory to the addons folder. When I try to activate the addon I receive the following error:

Traceback (most recent call last):
File "/usr/share/blender/2.70/scripts/modules/addon_utils.py", line 299, in enable
mod = import(module_name)
File "/home/hellocatfood/.config/blender/2.70/scripts/addons/blended_cities/init.py", line 50, in
import blended_cities.utils.vmodal as modal
AttributeError: 'module' object has no attribute 'utils'