tonyclarkson on "[Plugin: Typekit Fonts for WordPress] 500 internal server error"

Hello, I'm using WordPress 4.2.2 running Avada theme and your latest version too and I'm getting an internal server error when I try to activate your plugin. I've tried deactivating all the others to rule out any clashes but no luck. Is there anything I can try to get it going?
Tony

https://wordpress.org/plugins/typekit-fonts-for-wordpress/