The very first time I tried the mod duo (all I had done was to manually update it to v1.1.3) and opened the pedalboard for the very first time, it showed the input/output lines connected with no "effects" (expected), and asked me to update to v1.2.0 (required update).
After I accepted this and v1.2.0 had installed, the pedalboard reloaded but is stuck forever at the spinning wheel.
Rebooting (both computer and mod duo) does not help. I have tried on two different PCs (Mac and Linux).
I wonder if the series of updates from very original version to latest 1.2.0 without ever using the pedalboard or mod duo has made it miss the initialization of something vital that now causes it to not load the pedalboard successfully.
How to reproduce
Here is what I did on my device:
First time boot of device
Manual update to 1.0.0
Manual update to 1.1.3
open pedalboard on 192.168.51.1 (very first time)
Accept the "Update to 1.2.0 required"
After update/reboot pedalboard gets stuck at spinning wheel
* version: v1.2.0
* system: 17020e6
* controller: e582b18
* Operating system: Mac
* System version: OS X 10.11.6
* Browser: Chrome, Safari, Opera
* Operating system: Linux
* System version: Ubuntu 16.04 LTS
* Browser: Firefox