Hi, after some further investigation into all of my config files, i found a class called rki_base in my rki_rifles. Not sure how i overlooked this before, but then again ive never had any errors like how you are mentioning when i tested the addon.But at the end of the day im only human, so sorry about that.
I have created an hotfix for the rifles and a my c130 addon, if you download and replace those .pbo's that should resolve your issues. You can find the hotfix here:
http://naf.8bit-online.co.uk/files/arma2/NAF_hotfix.7z
Thanks