Oooops, looks like an error slipped in. To fix it, please right click on the Spin Frame button and select "Configure toolbar", then, click on the last item in the list (#15), then click on the blue text on the right side and finally find a line that looks like:
var rotation = Operation.Create("Raster Image - Rotate");
and put the following on the next line:
rotation.Extend = 0;