W3 Total Cache - lost access to post and pages

Hello,
I asked a question on MON NOV 24 2014, 9:53:41 PM about installing and activated W3 Total Cache on my WP multisite. I immediately after activating it I lost access to my site completely. With some direction from Mr. Dalvi, I was able access the frontend nor the backend of the site. However, I could not access the pages nor the posts. I get 404 file not found error. Any ideas how to fix it please? I will attach a cope of the steps i followed to gain access and the error message.
Thanks for your time.
George