Known Issue with the Source-Nexus Suite installer and Mojave
This only applies to macOS Mojave (macOS 10.14) users.
Installing the Source-Nexus Suite on top of an existing installation will remove any Source-Nexus audio devices you had previously created. The installer includes a recovery tool that you can run with the installer itself, however.
After the installer completes, open up a terminal on your Mac and run the following command: NexusRecover restore