When I activate a command block chain in my multiplayer server (when more than one person is online), one of the players is kicked from the server when the command blocks are activated and they get the following message:

http://imgur.com/AjKJP8K

I saw a similar issue here: MC-86933
but I do not believe that the issue is the amount of ram used. I allocated 4 GB for the server, and 2 GB for each player. (I have 8GB on my computer.) I would appreciate any advice or updates on this issue.