For some icons, it still has the path __space-exploration-stuff__ from the previous mod, but you should change it to __space-exploration-stuff-k2-patch__ otherwise, it will not load properly.
Rookie mistake: testing before changing the mod's name, and not testing afterward. I've made the patch and I see green medkits loaded with 0.2.6, so I think it's fixed now. Thanks for posting.
