http://tex.stackexchange.com/questions/11622/add-space-between-paragraphs-in-beamer
My hack solution was to append the following latex code to the end of the paragraph that should have the space.
\\~\\
For example, try inserting this into a Beamer latex file:
\frame{ This is text that should have a blank line after it. \\~\\ Here is text following a blank line. }