Uncaught TypeError: Cannot read property 'apply' of undefined

[marina9568]

When I move or zoom timeline I get the error in console:
Uncaught TypeError: Cannot read property 'apply' of undefined
In the example the same error.

[stephenHartzell]

I see the same error.

[stephenHartzell]

I may have just figured it out. This occurs when an events function is declared but doesn't exist. E.g.

$scope.events = {
rangechange: $scope.onRangeChange,
rangechanged: $scope.onRangeChanged,
}

but $scope.onRangeChange doesn't exist.