I am getting an error when updating a DataWindow which says "Row changed between retrieve and update". What is the solution?

I have a grid datawindow with a picture in it's background (with dimensions of an A4 page) and I would like to export both data and the picture as a (single page) PDF file. I used several combinati...

Is there a way to handle the dynamic change of a dropdown for a single row in a grid-based datawindow? Example: NAME LIKABILITY PURCHASED IN COLOUR (Text) (DropDown*) (Text) (Text) Bananas [Good]...