The powergui can't use.

When the powergui was added in the Simulink, it displays the error :

警告: '' is not a valid model name because it is not a valid MATLAB function name. 
> In powergui 
警告: '' is not a valid model name because it is not a valid MATLAB function name. 
> In powergui 
警告: Could not evaluate MaskDisplay commands of block 'untitled/powergui': 未定义函数或变量 'dispMessage'。 
警告: '' is not a valid model name because it is not a valid MATLAB function name. 
> In powergui 
警告: '' is not a valid model name because it is not a valid MATLAB function name. 
> In powergui 
警告: Could not evaluate MaskDisplay commands of block 'untitled/powergui': 未定义函数或变量 'dispMessage'。

What's the reason?

Answer 1

[Burgess Zhang]

And my mate have the same question. We get the software(2017a) from our school，Huazhong university of science and technology.

Answer 2

[Hongyang Zhang]

Change the name of your Simulink file. You already had a Simulink file named with "untitled.slx".