What is the actual solution to this problem? I have the same problem (mysensors v2 (dev)) and domoticz.
I have 2 RBG-3D nodes, the first one is showing all dimmers and works perfect, but when i added the second one i only get "Present Blue" and the "show" button.
Under the mysensors hardware in domoticz the second RGB node display "Name: unknown, Sketch name: Unknown".
[image: 1462194787019-mysensors.png]