error on clearInput

[cornermac]

I have a text box using angucomplete-alt to pick a worker name. After the user saves the info, I clear the text box. Each time I get this error...
TypeError: Unable to get property 'originalObject' of undefined or null reference
at $scope.nameSelected (xxxPDC_Worker.php:304:3)
at callOrAssign (xxx/Angular/angucomplete-alt.js:167:11)
at Anonymous function (xxx/Angular/angucomplete-alt.js:124:11)
at Scope.prototype.$broadcast (xxx/Angular/angular.js:18487:15)
at $scope.saveNewWorker (xxxPDC_Worker.php:296:3)
at fn (Function code:2:153)
at callback (xxx/Angular/angular.js:26994:17)
at Scope.prototype.$eval (xxxAngular/angular.js:18161:9)
at Scope.prototype.$apply (xxx/Angular/angular.js:18261:13)
at Anonymous function (xxx/Angular/angular.js:26999:17)

The entry box on the page looks like this...

the end of the save function has this line to clear the entry box...
$scope.$broadcast('angucomplete-alt:clearInput','workerName');