I am using version 1.5. First I have a section where I ask if you want to make a donation. I use radio buttons to list 4 amounts, and then I have "Other" as the last choice. If someone chooses Other, then I use conditional logic to show another field.
Then I have another section that only shows up if someone selects "Dinner" from one of the menus at the top. That section has a price for adults and a price for children. Finally I have a Total field. The total works if I select Other and I enter a quantity for dinner. But if I select something from the Donation drop down, rather than the Other, that price is not added to the total. I checked enable values in the drop down.
My url is http://www.judaismyourway.org/wp-folder/registration/