Yours first because it's easier to deal with. What version of AND are you using? If it's a 1.73 beta or earlier, download and reinstall version 1.73 and patch D from
here. Please note that this WILL break your savegame, but it will fix your no XP for Great Commander's problem, as well as a bunch of other bugs. It will also give you new features. OTOH, if you don't use HydroX's HAND mod, you might end up missing a bunch of buildings that you've gotten used to as HydroX took over that aspect of this mod.