You can set Kennel Connection to automatically sync with QuickBooks. In order for the automatic sync to work, QuickBooks needs to be installed on every computer in your network. This error means QB is not installed on this computer.
You can either install QuickBooks on each computer or disable the automatic sync.
To disable the automatic sync, click on File, Business Info, QuickBooks DirectLink tab.
Check the box for "Disable QuickBooks DirectLink".
You will need to manually sync by clicking on Utilities, QuickBooks DirectSync.