KCVDS/Hamachi problem?

Recently I haven't been able to duel anyone and it's been frusterating since I can't seem to figure out what is going on. My suspition is that it has something to do with Hamachi. These arrow signs keep showing up on the other users in the same room that I am in.
I have a screen shot if you don't understand:

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Try to install the old Hamachi without removing the current one see if you will have the same networks see if it will work, if so? then keep using the old hamachi cuz the new one is epic fail.