WordPress Woocommerce not Working

I was using a theme Salejunction. and installed Woocommerce Plugin(2.0.2) which came with the theme. I added products and the product categories. I required the extension Dynamic Pricing for my products, I downloaded it. As soon as I Updated the woocommerce to 2.3.6, All my categories got disappeared.
Even I tried de-activating the extension. It didn’t work.
Also my menus are not getting created.. Although Everything is getting stored in database..
Re-Installing WordPress was of no use. Tried almost everything. But Unsuccessful. Googled.. No solution… Please help.. I am in damn need. Help …
Regards