Various serious problems incl Err 500

I am having big trouble with Cobalt. html fields have to be unpublished because conflict with Rocket Themes. Trying to get a list or view of record is producing a 500 error.

http://www.politicaboricua.com/index.php?option=com_cobalt& ;view=record&user_id=42&cat_id=3&id=1&Itemid=1320

Setup Apache 2.4.3, PHP 5..3.16, Joomla 2.5.6, JS 2.6