I had the same problem
Hi
I hade the same problem after reading this message i find in the dataset.xsd-in the fill,getdata() configuration- advanced options-
the refresh the data table, i selected it and it solved my problem.
I dont realy now what the problem as because i was trying to save changes made by a edit command, if someone can help explain i whoud be tankfull.
hope this message helps you. ; )

