ID 475825 - Fail to network render with macOS devices.

Problem summary
Network Render fails when rendering between macOS devices.

Customer reported version
modo.15.0v3

Customer reported platform
macOS 10.15

Steps to reproduce

1) Open Modo and create a simple cube.
2) Go to System > Preferences > Final Rendering and enable Use Render Nodes.

3) Go to Render > Open Network View to confirm that the worker machines are available.

4) Render the scene file and notice that it gets stuck in a "Rendering..." state on the Mac. It then requires Modo to be forcibly closed. 

Expected behaviour

The Render should progress.

Actual behaviour
The macOS device gets stuck in a "Rendering..." state and requires a force quit.

Workaround
Unknown.

Reproduced by support

This bug has been reproduced in:

15.0v3 - Windows 10 + macOS 10.15 (Catalina)

15.0v1 - Windows 10 + macOS 10.15 (Catalina) -regression

Unable to reproduce bug in:
14.2v2 - Windows 10 + macOS 10.15 (Catalina)

Earliest version tested

14.2v2  - This issue doesn't appear in this version and has regressed.