what you want to do first before anything major is unplug-replug it in.
open sonar,see if its taking or not,if not/open a project as normal.
unplug your device,replug your device.you should theoreticaly see a message stating your device has been removed or pluged in,select yes from this menu.
go into the preference menu,look under devices,you may need to recheck your device again,like you did when set up.
if this doesnt work,exit sonar,cold reebot(restart your computer)without your device pluged in.
once computer is up/plug in your device. open sonar.
look in preferences for your device.you should either see it there or wont need to go to preferences because your device is already to go.