I've been following your demos specially the one about row selection.
When selecting a row, the update message shows but the row does not become selected.
I'm doing exactly as you have on your demos.
Can you help me please?
It might be a CSS issue. You can check whether the CSS is being applied properly using Chrome developer tools - the row header columns should have *_rowheader_selected applied (where * is the theme name).
If the selected rows are marked with the CSS class properly you will need to update your theme - create a new one using the theme designer at http://themes.daypilot.org/.