Opengraph not working

Dmollo,
It's best to create a new topic, unless you find one with the exact issue you're having. It helps keep things cleaner and more organized around here.

For the white screen, can you go to the Joomla Global Configuration and set Error Reporting to "Maximum" and turn GZip compression "Off". That should show a PHP error message on the white page that will help us diagnose what the issue is.

Once you have that message, please create a new topic and post the following:
* The error message
* What kind of action you're trying to create... I'm not sure what "group" is. Is that from JomSocial's Groups, or something else?
* If JomSocial, please post your JomSocial version. If some other extension, let us know that version.

That will help us get to the bottom of your problems quickly.

Thanks,
Alex