It seems after the new updates (1.04 or 1.03) I'm not able to allow client-side mods on my server. Just putting *.bikey file in "serverkeys" folder doesnt work anymore. I have to launch same mods on client and on server, or otherwise I get error "Client contains PBO which is not part of server data *path to mod's pbo*". That destroys purpose of client-side mods - allowing players to play with (for example) different sound mods or without any.