OS X Mavericks :: Stop MacPro From Automatically Connecting To Macbook?

I have a MacPro and a Macbook. Recently I used the sharing function to play a game with my friend where I connected the two computers to a shared folder. I also installed Hamachi and used that for creating a VPN-network. Now I have erased the shared folder, uninstalled Hamachi and disabled the sharing function, but my MacPro still automatically tries to connect to my Macbook. The message is as following "There was a problem connecting to the server "MickiMacbook". "The server may not exist or it is unavailable at this time. Check the server name or IP adresss, check your network connection, and then try again".  

I don't really understand why it keeps doing this as I've deleted all of the previously used programs. I've also deleted all of the files in /Library/PDF Services: but that did not work.