Woocommerce admin problem.

I am currently working on a site using the vantage theme https://wordpress.org/themes/vantage
I chose this theme for its layout, slider and the fact it notes in the description its compatibility with Woocommerce. I have the theme installed and it all works fine until I install the woocommerce theme http://wordpress.org/plugins/woocommerce/
When I install the plug in and then activate it I cannot access my wp admin area but I can see my site fine. To get it back I have to delete the plug in via ftp.
I have tried many times and it wont work. I have just tried again as I am trying this and it installed fine but when I went to activate it I got the message “Plugin could not be activated because it triggered a fatal error.”

Any advice would be appreciated.