Need to capitalize "S" in Shaped for the S-Shaped slope shape in RHEM parameter.java file.
public void computeSlSxValues() {
switch (aoa.slopeShape) {
case "Uniform":
sl = aoa.slopeSteepness + ", " + aoa.slopeSteepness;
sx = 0.00 + ", " + 1.00;
break;
case "Convex":
sl = 0.001 + ", " + (aoa.slopeSteepness * 2);
sx = 0.00 + ", " + 1.00;
break;
case "Concave":
sl = (aoa.slopeSteepness * 2) + ", " + 0.001;
sx = 0.00 + ", " + 1.00;
break;
case "S-shaped":
sl = 0.001 + ", " + (aoa.slopeSteepness * 2) + ", " + 0.001;
sx = 0.00 + ", " + 0.50 + ", " + 1.00;
break;