As you can
see here the page layout gets destroyed.

Below it is an error message generated on the page:
0 - DateTime::__construct(): Failed to parse time string ({"year":"1977","month":"7","day":"2"}) at position 0 ({): Unexpected character
When I disable the plugin "EasySocial for Kunena", suddenly the page works just fine.

Upon further investigation the option that breaks the layout is "Enable EasySocial Profiles". Technically I can get the avatars to work without breaking the page, but I cannot have them link to the ES profile without breaking the page layout.

Perhaps there is a syntax error going on with the ES Kunena plugin? I'm being very careful with my usage of enabled plugins.