Added sanity checks to 'FragDae' ctor.
Added sanity checks to 'FragDae' ctor.

daviddeng/azrael,daviddeng/azrael,olitheolix/azrael,olitheolix/azrael,olitheolix/azrael,olitheolix/azrael,daviddeng/azrael,daviddeng/azrael,daviddeng/azrael,olitheolix/azrael