Recently I wanted to apply some gaussian blur to a layer mask. I selected the mask layer and hit the fx button at the bottom of the dialogue. Sure enough up pops a little fx on the mask in the layers palette and the layer effects dialogue opens for me. But when I try to apply the blur nothing happens. AP presents the dialogue to me, accepts the settings on the slider .... but does nothing. Strangely it doesn't warn me that am I trying to do something that I shouldn't be doing. So am I missing something here? At present the only way I can find to apply a blur to a layer mask is to do so destructively from the main Filters menu. Obviously Refine Mask would seem to be one option but it automatically analyses the selection and starts to do other stuff as well that I don't really want. So is there a way I can apply a non destructive blur to a layer mask or is there a way I can stop Refine Mask from doing anything else except soft edging?