there may be multiple causes of this error.  I believe I ran into this error on desktop when trying to use a parameter directly applied within the color shelf.  As a workaround, I put the parameter into a calc field and then applied the calc onto the color shelf.

Are you doing anything within here related to parameters? 

Suzann--

I would suggest that you contact our support team regarding this issue. We have seen cases like this in the past. Sometimes it has been caused by trying to use a parameter directly to color fields. In this case, the problem was solved by creating a calc that referenced the parameter and then the calc was put onto the color shelf.

Feel free to email the team at support@tableau.com

Dan Huff

Hi Suzann,

Did you find any answer for the issue you had reported?

I am getting the same error while exporting the report as crosstab.

Any help will be appreciated.

Thank you.

Regards,