obviously 2.0 is the most recent update to inkub0's RTlights.
so grab that one, not the earlier versions.
as far as i am aware, inkub0 never made updated Rtlights for hipnotic (MP1)
FCZ also made RTlights for hipnotic though.
check the link in my signature for a list of all available RTlights (and all available HD stuff for quake and mission-packs)