Program: 174521
Project: 174521
Buggy source:
public ModelQuartz(float modelSize,boolean isArmor){
  super(modelSize,0.0F,64,isArmor ? 32 : 64);
  this.bipedHead=new ModelRenderer(this,0,0);
  if (!isArmor) {
    this.bipedHead.addBox(-4F,-12F,-4F,8,8,8,modelSize);
  }
 else {
    this.bipedHead.addBox(-4F,-12F,-4F,8,8,8,modelSize + 0.5F);
  }
  this.bipedHead.setRotationPoint(0F,0F,0F);
  this.bipedHeadwear=new ModelRenderer(this,32,0);
  this.bipedHeadwear.addBox(-4F,-12F,-4F,8,8,8,modelSize + 1.1F);
  this.bipedHeadwear.setRotationPoint(0F,0F,0F);
  this.bipedBody=new ModelRenderer(this,16,16);
  this.bipedBody.addBox(-5F,-4F,-3F,10,16,6,modelSize);
  this.bipedBody.setRotationPoint(0F,0F,0F);
  this.bipedRightArm=new ModelRenderer(this,48,16);
  this.bipedRightArm.addBox(-4F,-4F,-2F,4,14,4,modelSize);
  this.bipedRightArm.setRotationPoint(0F,0F,0F);
  this.bipedLeftArm=new ModelRenderer(this,48,34);
  this.bipedLeftArm.addBox(0F,-4F,-2F,4,14,4,modelSize);
  this.bipedLeftArm.setRotationPoint(0F,0F,0F);
  this.bipedRightLeg=new ModelRenderer(this,0,16);
  this.bipedRightLeg.addBox(1F,0F,-2F,4,12,4,modelSize);
  this.bipedRightLeg.setRotationPoint(0F,0F,0F);
  this.bipedLeftLeg=new ModelRenderer(this,0,32);
  this.bipedLeftLeg.addBox(-5F,0F,-2F,4,12,4,modelSize);
  this.bipedLeftLeg.setRotationPoint(0F,0F,0F);
  this.bipedCape=new ModelRenderer(this,0,0);
  this.bipedCape.setTextureSize(64,32);
  this.bipedCape.addBox(-5.0F,-4.0F,-2.f,10,20,1,modelSize);
}

Fixed version (ground truth):
public ModelQuartz(float modelSize,boolean isArmor){
  super(modelSize,0.0F,64,isArmor ? 32 : 64);
  this.bipedHead=new ModelRenderer(this,0,0);
  if (!isArmor) {
    this.bipedHead.addBox(-4F,-12F,-4F,8,8,8,modelSize);
  }
 else {
    this.bipedHead.addBox(-4F,-12F,-4F,8,8,8,modelSize + 0.5F);
  }
  this.bipedHead.setRotationPoint(0F,0F,0F);
  this.bipedHeadwear=new ModelRenderer(this,32,0);
  this.bipedHeadwear.addBox(-4F,-12F,-4F,8,8,8,modelSize + 1.1F);
  this.bipedHeadwear.setRotationPoint(0F,0F,0F);
  this.bipedBody=new ModelRenderer(this,16,16);
  this.bipedBody.addBox(-5F,-4F,-3F,10,16,6,modelSize);
  this.bipedBody.setRotationPoint(0F,0F,0F);
  this.bipedRightArm=new ModelRenderer(this,48,16);
  this.bipedRightArm.addBox(-4F,-4F,-2F,4,14,4,modelSize);
  this.bipedRightArm.setRotationPoint(0F,0F,0F);
  this.bipedLeftArm=new ModelRenderer(this,48,34);
  this.bipedLeftArm.addBox(0F,-4F,-2F,4,14,4,modelSize);
  this.bipedLeftArm.setRotationPoint(0F,0F,0F);
  this.bipedRightLeg=new ModelRenderer(this,0,16);
  this.bipedRightLeg.addBox(1F,0F,-2F,4,12,4,modelSize);
  this.bipedRightLeg.setRotationPoint(0F,0F,0F);
  this.bipedLeftLeg=new ModelRenderer(this,0,32);
  this.bipedLeftLeg.addBox(-5F,0F,-2F,4,12,4,modelSize);
  this.bipedLeftLeg.setRotationPoint(0F,0F,0F);
  this.bipedCape=new ModelRenderer(this,0,0);
  this.bipedCape.setTextureSize(64,32);
  this.bipedCape.addBox(-5.0F,-4.0F,-2.f,10,20,1,modelSize);
  if (!isArmor && KAGIC.isHalloween()) {
    float hatHeight=-4F;
    this.witchHat=(new ModelRenderer(this)).setTextureSize(64,128);
    this.witchHat.setRotationPoint(-6.0F,-10.03125F,-6.0F);
    this.witchHat.setTextureOffset(0,64).addBox(0.0F,hatHeight,0.0F,12,2,12,modelSize);
    this.bipedHead.addChild(this.witchHat);
    ModelRenderer middle=(new ModelRenderer(this)).setTextureSize(64,128);
    middle.setRotationPoint(2.75F,-4.0F,3.0F);
    middle.setTextureOffset(0,78).addBox(0.0F,hatHeight,0.0F,7,4,7,modelSize);
    middle.rotateAngleX=-0.05235988F;
    middle.rotateAngleZ=0.02617994F;
    this.witchHat.addChild(middle);
    ModelRenderer top=(new ModelRenderer(this)).setTextureSize(64,128);
    top.setRotationPoint(1.75F,-4.0F,2.0F);
    top.setTextureOffset(0,89).addBox(0.0F,hatHeight,0.0F,4,4,4,modelSize);
    top.rotateAngleX=-0.10471976F;
    top.rotateAngleZ=0.05235988F;
    middle.addChild(top);
    ModelRenderer tip=(new ModelRenderer(this)).setTextureSize(64,128);
    tip.setRotationPoint(1.75F,-2.0F,2.0F);
    tip.setTextureOffset(0,97).addBox(0.0F,hatHeight,0.0F,1,2,1,0.25F);
    tip.rotateAngleX=-0.20943952F;
    tip.rotateAngleZ=0.10471976F;
    top.addChild(tip);
  }
 else {
    this.witchHat=null;
  }
}