Officers window, when you use the "Search by Ability or Location" panel, sometimes it throws a 30009 error generated by MSFlexGrid: Invalid Row Value.
I've duplicated the bug. It only affects the number one officer in that rank (by seniority). For instance, you have a only one Vice Admiral and every time you select him or her in the Search panel it throws this error. This also happens when you select the first Rear Admiral (as in, number 1 of that rank). This happens for the 1st Commodore and 1st Captain as well, but not for the 1st Commander. It does not happen if you already have the rank selected in the Ranks and Seniority panel (i.e. does not throw an error for the first Captain if you're already looking at Captains on the left hand panel "Seniority of officers within the selected rank").