Hi I am receiving this error message when I click the update button in a gridview that I created. The gridview is bound to an objectdatasource which is bound to a tableadapter. Since this specific tableadapter's select statement has a couple inner joins in it i had to create my own Update statement which I did. I then bound the update statement of the objectdatasource to this update statement but am receiving the following error. Has anyone run into this before? Thanks!