When trying to create a second network it simply does not save/add the new network.

Reproduction steps:

1. Open Flux Controller
2. Create new network; This works as expected.
3. Attempt to create new network
4. New network is not created; This does not work as expected.

Exactly the same problem on the page: https://github.com/SonarSonic/Flux-Networks/issues/168

Environment:
Java: 8
Minecraft: 1.10.2
Mod pack: FTB Skyfactory 3
Config: Default

This version is too old and no longer supported.