I have only been mapping since February this year and already have exceeded the "2048 material asset limit" but i know i haven't gone over the limit since i have only used a few bo2 weapons/guns and some default WaW textures.. I have tried every possible fix i could find, and got nothing  . I have also heard something about a duplicate CSV causing this but i don't know. Thanks in advance

Well you must have gone over the limit to actually hit the limit. I've seen you're map and you use a lot of different materials and models which all contribute to the material limit. I would suggest condensing your material usage and using UGX's asset counter and throw all asset files related to the map in it to see really how many materials you are using, from there you can determine how many to get rid of.