WIDGET FRAMEWORK Crashing Site?

Hey, so basically I'm getting this issue, everytime I'm trying to add Widget Framework, it keeps crashing my site? Like when I'm installing the add-on in the admin panel, it just closes the site. But once I remove it it's back online. Has anyone had this problem or know how to fix it?

i have never had this problem, but i would happily have a look to see if everything is in working order

when you says "closes the site", can you elaborate on that?