[asherkin]

The idea is that you have one metamod install with bin, then two other directories under addons that contain your differing copies of sourcemod and their respective VDF files - then point MM:S at these with mm_basedir. You only need to do this if you want different core binaries for each SourceMod, else you can just deal with sm_basepath. No matter what you do, you shouldn't be editing any of the VDF files.