New relic Plugin Agent Not starting

[AnilkumarSeshendra]

I am trying to install Mongo DB Plugin on my test server. I have followed the steps but could see the agent is not getting started.
Below is the link that I followed.

Below are the versions of Python and pip that I installed.

[root@anil newrelic]# pip --version
pip 7.1.0 from /usr/lib/python2.6/site-packages (python 2.6)
[root@anil newrelic]# python --version
Python 2.6.6
[root@anilnewrelic]#

When I try running the agent, getting the below error.

[root@anil data]# newrelic-plugin-agent -c /data/newrelic-plugin-agent.cfg [-f]
Traceback (most recent call last):
File "/usr/bin/newrelic-plugin-agent", line 5, in
from pkg_resources import load_entry_point
File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 2655, in
working_set.require(requires)
File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 648, in require
needed = self.resolve(parse_requirements(requirements))
File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 546, in resolve
raise DistributionNotFound(req)
pkg_resources.DistributionNotFound: helper>=2.2.2

I also tried below:

[root@anil init.d]# pwd
/data/newrelic_plugin_agent-1.3.0/etc/init.d
[root@anil init.d]# /data/newrelic_plugin_agent-1.3.0/etc/init.d/newrelic-plugin-agent.rhel start
Starting /usr/bin/newrelic-plugin-agent: Traceback (most recent call last):
File "/usr/bin/newrelic-plugin-agent", line 5, in
from pkg_resources import load_entry_point
File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 2655, in
working_set.require(requires)
File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 648, in require
needed = self.resolve(parse_requirements(requirements))
File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 546, in resolve
raise DistributionNotFound(req)
pkg_resources.DistributionNotFound: helper>=2.2.2
[FAILED]

Can you please help?

Thanks
Anilkumar Ch