I am getting the same error when closing one of my forms in an application which has been working for months. I am not using a grid. I am using a form with combination of Strataframe DevEx controls bound to BO and the Strataframe Listview that I am filling using the PopulationDataSourceSettings properties. In fact, I had 2 BBS objects on the form I was not using. So I deleted one of them. After that the problem went away. Obviously, I am not sure why.
I thought this feedback might help.
Thanks,
Jeff
I hope not. Keith Chisarik