Added to the run abort dialog is a checkbox which allows you to not show the dialog again. If you select this box, then subsequent aborts will use the same selection (Time Scroll or Cancel) and the dialog will not be shown. This applies only to the current RiverWare session.

At the beginning of a run, the Step button now performs only initialization on the first click. The second step executes the first timestep. Previously, the first click of the Step button performed initialization AND executed the first timestep.