After receiving the same error, I determined it was an incompatibility with with the Hellenic Armed Forces Mod(HAFM) for me.
Works fine with the Canadian Armed Forces Mod and the Russians mod. HAFM works with both of them as well, but when using R3F and HAFM together it causes the no entry 'bin\config.bin/CFgGlasses.muzzle_snds_H' error.