Program: 21842
Project: 21842
Buggy source:
@Override protected void drawGuiContainerBackgroundLayer(float f,int mouseX,int mouseY){
  GL11.glColor4f(1.0F,1.0F,1.0F,1.0F);
  Minecraft.getMinecraft().getTextureManager().bindTexture(texture);
  drawTexturedModalRect(guiLeft,guiTop,0,0,xSize,ySize);
  renders++;
  Iterator renderIter=elements.iterator();
  while (renderIter.hasNext()) {
    ((ElementGuiHelper)renderIter.next()).draw(this,renders);
  }
  drawItemStack(new ItemStack(MinechemItemsRegistration.polytool),80,42,"String_Node_Str");
  String localizedName;
  localizedName=MinechemHelper.getLocalString("String_Node_Str");
  if (localizedName.isEmpty() || localizedName == "String_Node_Str") {
    localizedName="String_Node_Str";
  }
  fontRendererObj.drawString(localizedName + "String_Node_Str" + PolytoolItem.instance.getSwordStr(polytool),guiLeft + 10,guiTop + 80,0x404040);
  localizedName=MinechemHelper.getLocalString("String_Node_Str");
  if (localizedName.isEmpty() || localizedName == "String_Node_Str") {
    localizedName="String_Node_Str";
  }
  fontRendererObj.drawString(localizedName + "String_Node_Str" + PolytoolItem.instance.getPickaxeStr(polytool),guiLeft + 10,guiTop + 90,0x404040);
  localizedName=MinechemHelper.getLocalString("String_Node_Str");
  if (localizedName.isEmpty() || localizedName == "String_Node_Str") {
    localizedName="String_Node_Str";
  }
  fontRendererObj.drawString(localizedName + "String_Node_Str" + PolytoolItem.instance.getStoneStr(polytool),guiLeft + 10,guiTop + 100,0x404040);
  localizedName=MinechemHelper.getLocalString("String_Node_Str");
  if (localizedName.isEmpty() || localizedName == "String_Node_Str") {
    localizedName="String_Node_Str";
  }
  fontRendererObj.drawString(localizedName + "String_Node_Str" + PolytoolItem.instance.getAxeStr(polytool),guiLeft + 10,guiTop + 110,0x404040);
  localizedName=MinechemHelper.getLocalString("String_Node_Str");
  if (localizedName.isEmpty() || localizedName == "String_Node_Str") {
    localizedName="String_Node_Str";
  }
  fontRendererObj.drawString(localizedName + "String_Node_Str" + PolytoolItem.instance.getShovelStr(polytool),guiLeft + 10,guiTop + 120,0x404040);
}

Fixed version (ground truth):
@Override protected void drawGuiContainerBackgroundLayer(float f,int mouseX,int mouseY){
  GL11.glColor4f(1.0F,1.0F,1.0F,1.0F);
  Minecraft.getMinecraft().getTextureManager().bindTexture(texture);
  drawTexturedModalRect(guiLeft,guiTop,0,0,xSize,ySize);
  renders++;
  Iterator renderIter=elements.iterator();
  while (renderIter.hasNext()) {
    ((ElementGuiHelper)renderIter.next()).draw(this,renders);
  }
  drawItemStack(polytoolItem,80,42,"String_Node_Str");
  String localizedName;
  localizedName=MinechemHelper.getLocalString("String_Node_Str");
  if (localizedName.isEmpty() || localizedName == "String_Node_Str") {
    localizedName="String_Node_Str";
  }
  fontRendererObj.drawString(localizedName + "String_Node_Str" + PolytoolItem.instance.getSwordStr(polytool),guiLeft + 10,guiTop + 80,0x404040);
  localizedName=MinechemHelper.getLocalString("String_Node_Str");
  if (localizedName.isEmpty() || localizedName == "String_Node_Str") {
    localizedName="String_Node_Str";
  }
  fontRendererObj.drawString(localizedName + "String_Node_Str" + PolytoolItem.instance.getPickaxeStr(polytool),guiLeft + 10,guiTop + 90,0x404040);
  localizedName=MinechemHelper.getLocalString("String_Node_Str");
  if (localizedName.isEmpty() || localizedName == "String_Node_Str") {
    localizedName="String_Node_Str";
  }
  fontRendererObj.drawString(localizedName + "String_Node_Str" + PolytoolItem.instance.getStoneStr(polytool),guiLeft + 10,guiTop + 100,0x404040);
  localizedName=MinechemHelper.getLocalString("String_Node_Str");
  if (localizedName.isEmpty() || localizedName == "String_Node_Str") {
    localizedName="String_Node_Str";
  }
  fontRendererObj.drawString(localizedName + "String_Node_Str" + PolytoolItem.instance.getAxeStr(polytool),guiLeft + 10,guiTop + 110,0x404040);
  localizedName=MinechemHelper.getLocalString("String_Node_Str");
  if (localizedName.isEmpty() || localizedName == "String_Node_Str") {
    localizedName="String_Node_Str";
  }
  fontRendererObj.drawString(localizedName + "String_Node_Str" + PolytoolItem.instance.getShovelStr(polytool),guiLeft + 10,guiTop + 120,0x404040);
}