Aggregator non root config to start

Hi,

I'll start with my objective. I'm trying to configure the following:
AGGREGATOR 1 --> AGGREGATOR 2 --> Carbon CACHE
(3 different apps on 3 different boxes)

So far if apps are reporting to AGGREGATOR 2 everything is running fine. Now we had to add AGGREGATOR 1 for scaling reasons but I don't have root access there. So I downloaded the sources and installed with:
python setup.py install --install-lib=/opt/local/stats/carbon/lib --install-data=/opt/local/stats/carbon --install-script=/opt/local/stats/carbon/bin

I created the aggregator.rules and carbon.conf where I changed the destination to be AGGREGATOR 2. I was also missing some dependencies: Twisted, Zope.interface, setuptools so I build them and added the egg in my pythonpath.
Then I modified carbon-aggregator.py and added:

from pkg_resources import require
require('setuptools')
require('zope.interface')
require('twisted')

But running the following:
python ../bin/carbon-aggregator.py --config=./carbon.conf --rules=./aggregation-rules.conf start
Unexpected error while writing cache file
Traceback (most recent call last):
  File "build/bdist.linux-x86_64/egg/twisted/python/usage.py", line 411, in <lambda>

  File "build/bdist.linux-x86_64/egg/twisted/application/app.py", line 486, in opt_reactor

  File "build/bdist.linux-x86_64/egg/twisted/application/reactors.py", line 80, in installReactor

  File "build/bdist.linux-x86_64/egg/twisted/plugin.py", line 213, in getPlugins

--- <exception caught here> ---
  File "build/bdist.linux-x86_64/egg/twisted/plugin.py", line 185, in getCache

exceptions.AttributeError: 'ZipPath' object has no attribute 'setContent'

Unexpected error while writing cache file
Traceback (most recent call last):
  File "build/bdist.linux-x86_64/egg/twisted/application/app.py", line 579, in parseOptions

  File "build/bdist.linux-x86_64/egg/twisted/python/usage.py", line 262, in parseOptions

  File "build/bdist.linux-x86_64/egg/twisted/application/app.py", line 596, in subCommands

  File "build/bdist.linux-x86_64/egg/twisted/plugin.py", line 213, in getPlugins

--- <exception caught here> ---
  File "build/bdist.linux-x86_64/egg/twisted/plugin.py", line 185, in getCache

exceptions.AttributeError: 'ZipPath' object has no attribute 'setContent'

No database plugin implemented for 'whisper'

Why is whisper required?
I'm on CentOS release 5.8 (Final)

I feel like I'm missing something but I can't find lots of documentation about installing from source and just the aggregator daemon.
Thanks in advance for any help