More effectmod parser work.

src/engine/ConfigParsing/EffectsParser.java

@@ -174,7 +174,9 @@ public class EffectsParser {
                     effectModifier.min = Float.parseFloat(modValues.get(1).trim());
                     effectModifier.scale = Float.parseFloat(modValues.get(2).trim());
                     effectModifier.compoundCurveType = mbEnums.CompoundCurveType.valueOf(modValues.get(3).trim());
-                    effectModifier.arg1 = modValues.get(4).trim();
+
+                    if (modValues.size() > 4)
+                        effectModifier.arg1 = modValues.get(4).trim();   // Some HeathFull entries do not have an argument
                     break;
                 case MeleeDamageModifier:
                 case OCV: