EventGen in a Windows Enviroment can´t error in jinja.py Can´t import jinja2

[nelsonmc]

Hi ,
I download splunk enterprise to my Windows 7 notebook and I am trying to put eventgen to work . I followed the github tutorials and others tutorials that I found here in splunk answers. So, my conf files are in the right places , my data sample also and i enabled the data input . Exploring more I found the log files /var/log/ and I got this message :
file "C:\Program Files\Splunk\etc\apps\SA-Eventgen\lib\splunk_eventgen\lib\plugins\generator\jinja.py", line 9, in
from jinja2 import nodes
ImportError: No module named jinja2

Can anyone help me with that ?

Thanks in Advance
Nelson