One question, I've built a warlord and it doesn't appear that he is getting a proficiency bonus with crossbows.
I48 and K48 should have the same formula as the other on that line. (but adjusted for the correct columns). Just copy G48 and paste it into 848 and K48.
On the overview page, cells M78 - M81 all reference IDmg, should be IDmg, MDmg, RDmg, and OHDmg respectively.
On the Xp/Money tab. Lable the 1st line as 'Creation', unlock the date, and change the formula in from "IF(C7="","",H6-J6)" to "IF(C6="","",H6-J6)"
Powers sheet. The Expanded Spell book entries should be unlocked.
For the Implement bonus.. Could the sheet look at the base Attack bonus area for these bonuses? Implements aren't really powers, and don't have damage values (tho if magic they add to damage and crits, but that info is in the attack bonuses area as well).