AC bug

When equipping armor, the AC is not being calculated properly. The AC changes to the armor's base AC plus any other equipment such as a shield but does not take into account the Dex mod.

Example: Character has a DEX of 16 for a +3. Base AC is 13. Character equips leather armor which has an AC of all. The character's AC should go up to 14 but instead goes down to 11. The box for "Add DEX Mod" on the Armor's sheet is checked.