Program: 12720
Project: 12720
Buggy source:
public TestCommand(){
  aliases.add("String_Node_Str");
  addSub(new TestSubCommand(){
    @Override protected void processCommand(    ICommandSender sender,    EntityPlayer player,    VampirePlayer vampire,    String[] param){
      vampire.setLevel(REFERENCE.HIGHEST_REACHABLE_LEVEL);
      VampireLordData.get(player.worldObj).makeLord(player);
    }
    @Override public String getCommandName(){
      return "String_Node_Str";
    }
  }
);
  addSub(new TestSubCommand(){
    @Override protected void processCommand(    ICommandSender sender,    EntityPlayer player,    VampirePlayer vampire,    String[] param){
      if (player instanceof EntityPlayerMP) {
        if (player.dimension != VampirismMod.castleDimensionId) {
          ((EntityPlayerMP)player).mcServer.getConfigurationManager().transferPlayerToDimension(((EntityPlayerMP)player),VampirismMod.castleDimensionId,new TeleporterCastle(MinecraftServer.getServer().worldServerForDimension(VampirismMod.castleDimensionId)));
        }
        return;
      }
    }
    @Override public String getCommandName(){
      return "String_Node_Str";
    }
  }
);
  addSub(new TestSubCommand(){
    @Override protected void processCommand(    ICommandSender sender,    EntityPlayer player,    VampirePlayer vampire,    String[] param){
      if (param.length < 1)       return;
      int id=Integer.parseInt(param[0]);
      int amount=10;
      if (param.length > 1) {
        amount=Integer.parseInt(param[1]);
      }
      NBTTagCompound nbt=new NBTTagCompound();
      nbt.setInteger("String_Node_Str",player.getEntityId());
      IMessage m=new SpawnCustomParticlePacket(id,player.posX,player.posY,player.posZ,amount,nbt);
      VampirismMod.modChannel.sendToAll(m);
      return;
    }
    @Override public String getCommandUsage(    ICommandSender var1){
      return this.getCommandName() + "String_Node_Str";
    }
    @Override public String getCommandName(){
      return "String_Node_Str";
    }
  }
);
  addSub(new TestSubCommand(){
    @Override protected void processCommand(    ICommandSender sender,    EntityPlayer player,    VampirePlayer vampire,    String[] param){
      List l=player.worldObj.getEntitiesWithinAABBExcludingEntity(player,player.boundingBox.expand(3,2,3));
      for (      Object o : l) {
        if (o instanceof EntityCreature) {
          sendMessage(sender,o.getClass().getName());
        }
 else {
          sendMessage(sender,"String_Node_Str" + o.getClass().getName());
        }
      }
    }
    @Override public String getCommandName(){
      return "String_Node_Str";
    }
  }
);
  addSub(new TestSubCommand(){
    @Override protected void processCommand(    ICommandSender sender,    EntityPlayer player,    VampirePlayer vampire,    String[] param){
      List l=player.worldObj.getEntitiesWithinAABBExcludingEntity(player,player.boundingBox.expand(6,6,6));
      for (      Object o : l) {
        if (o instanceof EntityDracula) {
          sendMessage(sender,o.toString());
        }
      }
    }
    @Override public String getCommandName(){
      return "String_Node_Str";
    }
  }
);
  addSub(new TestSubCommand(){
    @Override protected void processCommand(    ICommandSender sender,    EntityPlayer player,    VampirePlayer vampire,    String[] param){
      MovingObjectPosition pos=Helper.getPlayerLookingSpot(player,0);
      if (pos != null && MovingObjectPosition.MovingObjectType.BLOCK.equals(pos.typeOfHit)) {
        sendMessage(sender,"String_Node_Str" + player.worldObj.getBlock(pos.blockX,pos.blockY,pos.blockZ) + "String_Node_Str"+ player.worldObj.getBlockMetadata(pos.blockX,pos.blockY,pos.blockZ));
      }
    }
    @Override public String getCommandName(){
      return "String_Node_Str";
    }
  }
);
  addSub(new TestSubCommand(){
    @Override protected void processCommand(    ICommandSender sender,    EntityPlayer player,    VampirePlayer vampire,    String[] param){
      MovingObjectPosition pos=Helper.getPlayerLookingSpot(player,0);
      if (pos != null && MovingObjectPosition.MovingObjectType.BLOCK.equals(pos.typeOfHit)) {
        Block b=player.worldObj.getBlock(pos.blockX,pos.blockY,pos.blockZ);
        if (b instanceof BlockBloodAltar1) {
          TileEntityBloodAltar1 altar1=(TileEntityBloodAltar1)player.worldObj.getTileEntity(pos.blockX,pos.blockY,pos.blockZ);
          altar1.makeInfinite();
        }
      }
    }
    @Override public String getCommandName(){
      return "String_Node_Str";
    }
  }
);
  addSub(new TestSubCommand(){
    @Override protected void processCommand(    ICommandSender sender,    EntityPlayer player,    VampirePlayer vampire,    String[] param){
      MovingObjectPosition pos=Helper.getPlayerLookingSpot(player,0);
      if (pos != null && MovingObjectPosition.MovingObjectType.BLOCK.equals(pos.typeOfHit)) {
        Block b=player.worldObj.getBlock(pos.blockX,pos.blockY,pos.blockZ);
        if (b instanceof BlockCoffin) {
          ((BlockCoffin)b).setCoffinOccupied(player.worldObj,pos.blockX,pos.blockY,pos.blockZ,null,true);
          TileEntity t=player.worldObj.getTileEntity(pos.blockX,pos.blockY,pos.blockZ);
          t.markDirty();
        }
      }
    }
    @Override public String getCommandName(){
      return "String_Node_Str";
    }
  }
);
}

Fixed version (ground truth):
public TestCommand(){
  aliases.add("String_Node_Str");
  addSub(new TestSubCommand(){
    @Override protected void processCommand(    ICommandSender sender,    EntityPlayer player,    VampirePlayer vampire,    String[] param){
      vampire.setLevel(REFERENCE.HIGHEST_REACHABLE_LEVEL);
      VampireLordData.get(player.worldObj).makeLord(player);
      MinecraftServer.getServer().getConfigurationManager().sendChatMsg(new ChatComponentText(sender.getCommandSenderName() + "String_Node_Str"));
    }
    @Override public String getCommandName(){
      return "String_Node_Str";
    }
  }
);
  addSub(new TestSubCommand(){
    @Override protected void processCommand(    ICommandSender sender,    EntityPlayer player,    VampirePlayer vampire,    String[] param){
      if (player instanceof EntityPlayerMP) {
        if (player.dimension != VampirismMod.castleDimensionId) {
          ((EntityPlayerMP)player).mcServer.getConfigurationManager().transferPlayerToDimension(((EntityPlayerMP)player),VampirismMod.castleDimensionId,new TeleporterCastle(MinecraftServer.getServer().worldServerForDimension(VampirismMod.castleDimensionId)));
        }
        return;
      }
    }
    @Override public String getCommandName(){
      return "String_Node_Str";
    }
  }
);
  addSub(new TestSubCommand(){
    @Override protected void processCommand(    ICommandSender sender,    EntityPlayer player,    VampirePlayer vampire,    String[] param){
      if (param.length < 1)       return;
      int id=Integer.parseInt(param[0]);
      int amount=10;
      if (param.length > 1) {
        amount=Integer.parseInt(param[1]);
      }
      NBTTagCompound nbt=new NBTTagCompound();
      nbt.setInteger("String_Node_Str",player.getEntityId());
      IMessage m=new SpawnCustomParticlePacket(id,player.posX,player.posY,player.posZ,amount,nbt);
      VampirismMod.modChannel.sendToAll(m);
      return;
    }
    @Override public String getCommandUsage(    ICommandSender var1){
      return this.getCommandName() + "String_Node_Str";
    }
    @Override public String getCommandName(){
      return "String_Node_Str";
    }
  }
);
  addSub(new TestSubCommand(){
    @Override protected void processCommand(    ICommandSender sender,    EntityPlayer player,    VampirePlayer vampire,    String[] param){
      List l=player.worldObj.getEntitiesWithinAABBExcludingEntity(player,player.boundingBox.expand(3,2,3));
      for (      Object o : l) {
        if (o instanceof EntityCreature) {
          sendMessage(sender,o.getClass().getName());
        }
 else {
          sendMessage(sender,"String_Node_Str" + o.getClass().getName());
        }
      }
    }
    @Override public String getCommandName(){
      return "String_Node_Str";
    }
  }
);
  addSub(new TestSubCommand(){
    @Override protected void processCommand(    ICommandSender sender,    EntityPlayer player,    VampirePlayer vampire,    String[] param){
      List l=player.worldObj.getEntitiesWithinAABBExcludingEntity(player,player.boundingBox.expand(3,2,3));
      for (      Object o : l) {
        if (o instanceof EntityLivingBase) {
          boolean flag=Helper.canReallySee((EntityLivingBase)o,player,false);
          sendMessage(sender,"String_Node_Str" + flag);
          return;
        }
      }
    }
    @Override public String getCommandName(){
      return "String_Node_Str";
    }
  }
);
  addSub(new TestSubCommand(){
    @Override protected void processCommand(    ICommandSender sender,    EntityPlayer player,    VampirePlayer vampire,    String[] param){
      List l=player.worldObj.getEntitiesWithinAABBExcludingEntity(player,player.boundingBox.expand(6,6,6));
      for (      Object o : l) {
        if (o instanceof EntityDracula) {
          sendMessage(sender,o.toString());
        }
      }
    }
    @Override public String getCommandName(){
      return "String_Node_Str";
    }
  }
);
  addSub(new TestSubCommand(){
    @Override protected void processCommand(    ICommandSender sender,    EntityPlayer player,    VampirePlayer vampire,    String[] param){
      MovingObjectPosition pos=Helper.getPlayerLookingSpot(player,0);
      if (pos != null && MovingObjectPosition.MovingObjectType.BLOCK.equals(pos.typeOfHit)) {
        sendMessage(sender,"String_Node_Str" + player.worldObj.getBlock(pos.blockX,pos.blockY,pos.blockZ) + "String_Node_Str"+ player.worldObj.getBlockMetadata(pos.blockX,pos.blockY,pos.blockZ));
      }
    }
    @Override public String getCommandName(){
      return "String_Node_Str";
    }
  }
);
  addSub(new TestSubCommand(){
    @Override protected void processCommand(    ICommandSender sender,    EntityPlayer player,    VampirePlayer vampire,    String[] param){
      MovingObjectPosition pos=Helper.getPlayerLookingSpot(player,0);
      if (pos != null && MovingObjectPosition.MovingObjectType.BLOCK.equals(pos.typeOfHit)) {
        Block b=player.worldObj.getBlock(pos.blockX,pos.blockY,pos.blockZ);
        if (b instanceof BlockBloodAltar1) {
          TileEntityBloodAltar1 altar1=(TileEntityBloodAltar1)player.worldObj.getTileEntity(pos.blockX,pos.blockY,pos.blockZ);
          altar1.makeInfinite();
        }
      }
    }
    @Override public String getCommandName(){
      return "String_Node_Str";
    }
  }
);
  addSub(new TestSubCommand(){
    @Override protected void processCommand(    ICommandSender sender,    EntityPlayer player,    VampirePlayer vampire,    String[] param){
      MovingObjectPosition pos=Helper.getPlayerLookingSpot(player,0);
      if (pos != null && MovingObjectPosition.MovingObjectType.BLOCK.equals(pos.typeOfHit)) {
        Block b=player.worldObj.getBlock(pos.blockX,pos.blockY,pos.blockZ);
        if (b instanceof BlockCoffin) {
          ((BlockCoffin)b).setCoffinOccupied(player.worldObj,pos.blockX,pos.blockY,pos.blockZ,null,true);
          TileEntity t=player.worldObj.getTileEntity(pos.blockX,pos.blockY,pos.blockZ);
          t.markDirty();
        }
      }
    }
    @Override public String getCommandName(){
      return "String_Node_Str";
    }
  }
);
}