No errors, It just does not work, almost no visible effect when you trying to use these functions.
Tested revision 5f692ed.
Update as of 0.4.15-dev-1125-g79794b524c:
ReactOS Paint on and :
Horizontally works perfectly
Vertically works perfectly
90º and 270º rotation doesn't work
Stretching works, but changes the canvas size
Skew doesn't work