This zip file contains 2 addons:
	SRMFCL_20SRB2_v1.2a - The Actual Mod
	CL_20SRB2-JustChars_v1.0a - Just the characters

The actual mod is the full mod, which contains the characters built in, so don't load both.
Just the characters is just the 2.0 characters for server hosts to use.