Exporting XML Data from Dynamic Forms

Hello,

I've created a dynamic PDF form in LiveCycle Designer ES4 and saved it as an Adobe Dynamic XML Form (*.pdf).  I want to be able to extract data after the form has been filled out; however, when I try to Export To -> XML 1.0 in Acrobat DC Pro, I get the following error:

Does anyone know what this means and how to fix this?  On a side note, I did find a workaround by creating a Submit button that submits the form as XML but would rather not have to create a fake email just to get extract the data.

Thanks!