I rebuilt my father-in-law's computer (using teamviewer full install) and selected public non-commercial use.  When I attempt to connect from my host, I get the following error:
    
        
             
    
I then uninstalled Teamviewer on the remote machine and installed the teamviewer-host version being careful to once again select the public non-commercial version.
I still get the error when attempting to connect.  I've never done any customization to the installs, they are downloaded straight from teamviewer.
Is there a way to correct this?