So I got "You can not play/edit this mission" error upon resuming ANY missions, from BIS to custom missions. The only problem seems to be clear that the addon "rki_base" is missing. After going through some mod folders I found some addons with the same names like rki_rifles.pbo and rki_backpacks.pbo. But rki_base, never heard of it. So I'd be thankful if someone knows this addon and where to get it. I've been in editor all day because I cannot resume any mission!