Form 5695 not calculating properly

I have been having issues with form 5965 not properly calculating the credits. I paid for a biomass stove install last year and should receive a $2000 credit for it. It seems that Part II Section B questions are answered correctly, but lines 21 a and b have no answer selected. 

Line 29e and g read the proper amount but then line 29h and 30 is calculated as "0" no matter what I enter