This LabVIEW class cannot find its parent class

This VI is a member of the LabVIEW class. LabVIEW cannot execute any part of the LabVIEW class because LabVIEW cannot find the parent class.

To correct this error, load the class library file ( .lvclass) or you can change the inheritance of the class so the class inherits from another class which LabVIEW has loaded.