Hi Jerome,
Sorry to hear this.
1. Can you please share a link to your website?
2. Can you please specify who your web host is? Are you hosting your site with GoDaddy, for example? Or MediaTemple? Or HostGator? Etc…let us know who.
3. Can you please share a screenshot of the error message you see when you activate the plugin? You can do so by uploading the screenshots to this thread. If you have issues with that, you can upload to Imgur.com, Flickr.com, CloudUp.com, or any similar image-hosting site; then just share the links to those images here and I’ll take a look.
Thanks!
George