Object type cccNormalizedBarChart can't be mapped to a valid class

I have a dashboard where I would like to be able to swap back and forth between a stacked bar chart and the 100% Normalized Stacked Bar Chart (percent view). I have assigned the 2 charts to different rows and set up a button so one or the other will be visible when the button is pushed, but when the dashboard loads I am getting the following error in the console:

CDF: Object type cccNormalizedBarChart can't be mapped to a valid class

Has anyone run into this before and know why it would not be able to map the object type?

Thanks,

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