oh ok, just saw this thread now. seems that I made some confusion with all those lostarena versions - I'm sorry.
1. there was the original version of lostarena which has been send in to the hl2dm mapcontest so I think it is the one which is most spreaded in the internet
2. db|nix from clansunited asked me to put in a rpg, because they need one in all league maps, dunno why. so I did, this version is fully compatible with the "old" version. changes where made via "EntEd".
3. there was this thread about elevators in lostarena. I took the lostarena version with rpg and improved them a bit, maybe some of you'll remember.
so all versions are compatible to eachother, that means it does NOT matter which version of lostarena you have in your local mapfolder. It's only relevant for the server!
hope everything is clear now