Make sure you download and install all the SONAR updates and patches, and the driver updates for the UA, and the keyboard, too, if it's connected with USB.
Use the ASIO Driver Mode for the UA.
You may have to right-click the SONAR icon and set it to 'Run As Administrator'. Do the same for the executable file on your hard drive. When right-clicking the icon, you may get an option to 'Troubleshoot Compatibility'. Click that, too, and the computer will try to select the best settings to run the older program.