Full loss of rudder

Full loss of Rudder. Playing around with guided mode on mission planner. Since, I have lost rudder on my copter and can not get it to work, any thoughts?

What do you mean you lost rudder? You have no control of Yaw? The copter won’t stop yawing? Do you have yaw control in Loiter mode? More info is needed, or a .bin log is best.

Have you made changes to GUID_OPTIONS?

Post a log file from a flight in which the issue happens.