Circuitscape for ArcGIS toolbox does not work

[leefusi]

I am using Circuitscape for ArcGIS toolbox. I use coordinates as a node. I want to see the resistance distance between the nodes. But I am reminded of the error that occurs after running. The following is the error displayed：

Python error on **line 249** of
cs_arc.py version 2013-05-29
RuntimeError: ERROR:Cannot find
Circuitscape installation.Circuitscape 
3.5.8 or greater must be installed

But I have already installed Circuitscape 4.0.I don't know the specific reason for the error, so I would like to ask how you can solve it, or if you have a user guide for Circuitscape for ArcGIS toolbox.