Code:
L 12/09/2010 - 18:37:34: [SM] Native "Steam_RequestGroupStatus" reported: No g_SteamClients entry found for client 28
L 12/09/2010 - 18:37:34: [SM] Displaying call stack trace for plugin "steamgroupadmins.smx":
L 12/09/2010 - 18:37:34: [SM] [0] Line 110, steamgroupadmins.sp::LookupPlayerGroups()
L 12/09/2010 - 18:37:34: [SM] [1] Line 87, steamgroupadmins.sp::OnClientPostAdminCheck()
alltough everything works