Installation Killed My Website

I'm looking for some advice, i have just purchased this product (EasyBlog) and I'm afraid to say its not been a good experience so far. I am developing a website for a customer currently offline in my Dev environment. I have just installed this component and all i get when visiting the front end of the website or the back end administration is a blank white screen after installation?

Can anyone help with regards to what the issue might be, or how i can completely remove the component without having to do a full site restore?

thanks.