Open Graph content plugin causes 404 with SEF enabled

Can you explain a little bit more on how we can recreate the issue? We'll gladly try to investigate and resolve the issue however we can.. it sounds like:
* Content view. Can you tell me what type of menu item it is? Single article, category blog, etc.
* There's an Archive module on the page. Any specific settings required.
* SEF has to be enabled. Is this Joomla SEF, or another 3rd party extension? When SEF is disabled, everything works fine, correct?

Thanks,
Alex