crashed site when i added to menu

I'm having a serious issue. I installed HikaShop on my joomla site 2.5. I wanted to see what it looked like on the frontend so I added a submenu to one of the menus on the main menu. Took and look and thought it looked nice, so I disabled the link and closed my computer to go home. I just turned on my computer for work and the only page that comes up is the HikaShop login - I can even navigate to other pages. So I uninstalled the component, but now there is the word "Shop" at the top of each page. That was the name I used for the link. I have uninstalled the component, plugins, and modules and it won't go away.

When I purchased this component, I wanted it only for a section of the site, not the whole site. HELP!

The site is: www.mastersonmethod.com

btw - I did figure out how to delete the word "shop" at the top of each page. But the problem still remains, when I install and try to look at it on the front - it takes over the site. Thank you for your help

I ended up un-installed the compondent and then I re-installed it. I'm going through your documentation step-by-step to make sure I'm not missing anything. When I get to adding the shopping cart to the front end and I have problems, I will post again.