Program: 174675
Project: 174675
Buggy source:
public static void generateName(ItemStack stack,NBTTagCompound nbt){
  if (Rarity.getRarity(nbt) == Rarity.COMMON)   return;
  String prefix=NameHelper.getRandomPrefix();
  String suffix="String_Node_Str";
  if (stack.getItem() instanceof ItemSword && !nbt.hasKey("String_Node_Str"))   suffix=NameHelper.getSwordSuffix();
 else   if (stack.getItem() instanceof ItemSword && nbt.hasKey("String_Node_Str") && nbt.getString("String_Node_Str").equals("String_Node_Str"))   suffix=NameHelper.getDaggerSuffix();
 else   if (stack.getItem() instanceof ItemSword && nbt.hasKey("String_Node_Str") && nbt.getString("String_Node_Str").equals("String_Node_Str"))   suffix=NameHelper.getMaceSuffix();
 else   if (stack.getItem() instanceof ItemLEMagical)   suffix=NameHelper.getWandSuffix();
 else   if (stack.getItem() instanceof ItemArmor && ((ItemArmor)stack.getItem()).armorType == EntityEquipmentSlot.HEAD)   suffix=NameHelper.getHelmetSuffix();
 else   if (stack.getItem() instanceof ItemArmor && ((ItemArmor)stack.getItem()).armorType == EntityEquipmentSlot.CHEST)   suffix=NameHelper.getChestplateSuffix();
 else   if (stack.getItem() instanceof ItemArmor && ((ItemArmor)stack.getItem()).armorType == EntityEquipmentSlot.LEGS)   suffix=NameHelper.getLeggingsSuffix();
 else   if (stack.getItem() instanceof ItemArmor && ((ItemArmor)stack.getItem()).armorType == EntityEquipmentSlot.FEET)   suffix=NameHelper.getBootSuffix();
  stack.setStackDisplayName(Rarity.getRarity(nbt).getColor() + prefix + "String_Node_Str"+ suffix);
}

Fixed version (ground truth):
public static void generateName(ItemStack stack,NBTTagCompound nbt){
  if (Rarity.getRarity(nbt) == Rarity.COMMON)   return;
  String prefix=NameHelper.getRandomPrefix();
  String suffix="String_Node_Str";
  if (stack.getItem() instanceof ItemLEMelee && ((ItemLEMelee)stack.getItem()).getType().equals("String_Node_Str"))   suffix=NameHelper.getDaggerSuffix();
 else   if (stack.getItem() instanceof ItemLEMelee && ((ItemLEMelee)stack.getItem()).getType().equals("String_Node_Str"))   suffix=NameHelper.getMaceSuffix();
 else   if (stack.getItem() instanceof ItemSword)   suffix=NameHelper.getSwordSuffix();
 else   if (stack.getItem() instanceof ItemLEMagical && !((ItemLEMagical)stack.getItem()).isStaff())   suffix=NameHelper.getWandSuffix();
 else   if (stack.getItem() instanceof ItemLEMagical && ((ItemLEMagical)stack.getItem()).isStaff())   suffix=NameHelper.getStaffSuffix();
 else   if (stack.getItem() instanceof ItemArmor && ((ItemArmor)stack.getItem()).armorType == EntityEquipmentSlot.HEAD)   suffix=NameHelper.getHelmetSuffix();
 else   if (stack.getItem() instanceof ItemArmor && ((ItemArmor)stack.getItem()).armorType == EntityEquipmentSlot.CHEST)   suffix=NameHelper.getChestplateSuffix();
 else   if (stack.getItem() instanceof ItemArmor && ((ItemArmor)stack.getItem()).armorType == EntityEquipmentSlot.LEGS)   suffix=NameHelper.getLeggingsSuffix();
 else   if (stack.getItem() instanceof ItemArmor && ((ItemArmor)stack.getItem()).armorType == EntityEquipmentSlot.FEET)   suffix=NameHelper.getBootSuffix();
 else   if (stack.getItem() instanceof ItemLEBauble && ((IBauble)stack.getItem()).getBaubleType(stack) == BaubleType.AMULET)   suffix=NameHelper.getAmuletSuffix();
 else   if (stack.getItem() instanceof ItemLEBauble && ((IBauble)stack.getItem()).getBaubleType(stack) == BaubleType.RING)   suffix=NameHelper.getRingSuffix();
 else   if (stack.getItem() instanceof ItemLEBauble && ((IBauble)stack.getItem()).getBaubleType(stack) == BaubleType.BELT)   suffix=NameHelper.getBeltSuffix();
  stack.setStackDisplayName(Rarity.getRarity(nbt).getColor() + prefix + "String_Node_Str"+ suffix);
}