Have a form designed in Word and converted/edited in Acrobat XI Pro. There is a submit button that causes the error referenced above. I looked up other discussions. There are no hidden objects on the form. When checking properties, some of the fonts do not have (Embedded subset) following the name but in all cases it is Arial MT. Not sure what I need to correct.
Did you import the PDF form in FormsCentral to add the submit button?
If not then you should direct your question to the Acrobat Form Forum
If this happening with a Submit button added by FormsCentral after you imported the PDF then please send your PDF to email@example.com with a description of your issue.