nDisplay having trouble deploying application

Hello,

I am trying to figure out how nDisplay works and am stuck on trying to deploy the application to another computer. (If there is a way to run nDisplay from one PC to multiple screens that would be great though).

Nothing happens when I click deploy application so I tried the start listeners button and am getting this error when trying to connect to another PC.

3/25/2019 2:27:46 PM: An error occurred while sending a command to 192.168.0.82. EXCEPTION: No connection could be made because the target machine actively refused it 192.168.0.82:41000

Anyone know what this could mean?

Thank you!