I have a problem with Inkscape.
I want to clip JPG portrait to a shape of paint-splatter PNG (technically two of the same paint splatter PNG grouped into one but I tried with just one to same non-result).
I'm putting my "mask" (cutting shape) on top of my JPG, selecto both and use either Clip > Set or Clip > Set Inverse, depending on current need.
Everytime I do that though, either nothing happens or I get an empty object (nothing on screen) as a result. Size of the resulting object seems to be "as desired" because selection outline is visible and object is still selectable/unselectable but there is nothing there.