Make sure the program is using the correct values for extract OG. Beersmith was underestimating my gravities by .006 consistently until I realized that the stock values for their LME were different than what I was using.
Cran+Razz Apfelwein, Graff, Oatmeal Stout
1 gal. test batches:
Pear Wine, Apfelwein, White Grape + Peach Wine
Ed's Robust Porter, This is my Haus Ale, Gone in 60 Seconds IPA, Hooked on ESB, Apfelwein