Electrical Manager shuts down when you launch Solid Edge Wiring & Harness Design.
Solution
Review of the EletricalManager logfile contains the message:
java.net.BindException: Address already in use: NET_Bind
It also show the default port: 49901
When everything starts correctly you will see:
Solid Edge Electrical Integration Server started on non secure port 49901
So, everything indicates a possible port conflict or hijack.
First, try a reboot to see if it resolves the conflict. If the conflict persists you can use the Resource Monitor Network tab to see what application is using port 49901:
Once the hijacker process is stopped you should be able to restart Electrical Manager.
Notes