So I did that for one of my MO profiles, the one my wife plays. But mousing over the check-box revealed a message that said these were just dummies and I should instead activate them in the 'archives' tab. On the right-hand side, in the tab that lists esps, I saw that the hi-res packs could be 'checked' (i.e. On the left-hand side of MO, which lists all the esms and plugins, the hi-res packs were listed at the top they didn't have the option of being 'checked' or un-checked. I discovered recently that I'd been running Skyrim without the hi-res packs for some reason, so the other day I downloaded them via Steam and opened up MO. Think I'm running into some trouble with correctly installing the official hi-res texture packs via Mod Organizer.