Saving a form with RadGridView produces the following error at design time: Code generation for property "PrintCellPaint" failed.
We isolated the following steps which reproduce the issue:
1. Drag and drop RadPageView on the form. Add 2 pages.
2. Add a RadGridView to one of the pages.
3. Saved and opened the form.
4. Select the other page and save the form.
case #1: If the grid is empty - Code generation for property 'PrintCellPaint' failed. Error was: 'Object does not match type.'
case #2: If the grid is data bound - Code generation for property 'PropertyChanging' failed. Error was: 'Object does not match type.'
The same errors if you use RadDock with tabbed documents.