Yah I know that greyed-out doesn't always mean unloadable - this is infuriating.
I kit out with nothing but uniform, vest, backpack, helmet, M4 (with Optic, Laser & Flash suppressor), MicroDAGR, map, compass and watch and save it as "Empty Loadout".
Then I Clear Loadout and try to load the (now greyed-out) Empty Loadout and...nothing.
Too many loadouts is not a problem as I have NONE due to the BSOD.
Fuck you ARMA.