I've checked each of your NLI 3.3 files and i've found the problem. Look like you added some WW4 magazine to every gun with this new version in the RKI_WEAP.pbo.
RKI_WEAP.pbo Config.cpp
I did some test by removing all WW4_magazines(including WW4_grenade) and everything is working just find, like it was in 3.2 version. I don't know if it was intentional since it's not a standalone addon anymore but if it was, just think to add WW4 mod in the ReadMe.txt in your next version.
EDIT: I just saw that you've let the old config in the addon. It still have a 1kb difference so i'll put the modified file in spoiler if it could help you or anyone in the same position as me.
Hope it help.