Reply by sugarpixy

If this is your regular mud cake recipe with fruit added you might need to add more flour to compensate for the fruit. The dried fruit is very heavy and so extra flour is needed. When I bake my fruit cakes I like to add extra fruit but I always add extra flour. So If I double the fruit then I double the flour as well while leaving the other ingredients at the same ratio.

-- Lori-Ann,The Cake Studio Cayman,http://www.facebook.com/pages/The-Cake-Studio-Cayman/136313133106508?ref=tn_tnmn