I'm still struggling to migrate my Vixen 3.5U4 sequences to XLights (currently 2019.18 64-bit). I've saved them to Vix 2.1 format and imported them into XLights as a Data Layer, that seems to work fine. I can open up the XLights sequence and see the Vixen effects as "Node" data in the model. However, when I try to add new effects to the resulting XLights sequence to overwrite the Vixen data layer, XLights gets really unstable and crashes every minute or so. Is there a version of XLights that's more stable with Data Layer data? Is there some other way that I can successfully migrate from Vixen to XLights? Or should I just give up on migrating them and just redo the sequences from scratch in XLights?