Ganttchart error

why is it that when i run my app, and i feed in data into the various fields of the gantt chart, it shows in red that COULD NOT CREATE WIDGET GOOGLEGANTT.WIDGET.GOOGLEGANTT?  
1 answers

Couple of options:

1. Is the widget compatible with the Mendix version?

2. Does the widget require any objects/data and are those objects/data available (not null) when the widget is loaded? Your screen shows empty data fields: I would imagine that a widget requiring that data could have issues with that (not saying it should)

3. Are there any conflicting widgets?