I have two 3D monitors and the LGP connected to my computer. --- Holoplay script target set to display 1: Game view: Display 1 no image in editor, Display 2 does have an image. Build shows black screen on regular main monitor. Holoquarium does the same thing. Shows error in Unity editor on play: [Holoplay] can't match. the first cal's unity index is1 In Holoplay.cs: if (targetDisplay != CalibrationManager.GetCalibration(i).unityIndex) -> targetDisplay is 0 while unityIndex is 1 --- Holoplay script target set to display 2: Game view: Display 1 has image Build has the same behaviour as with target set to display 1 No error in the Unity editor Surprisingly the previous Holoplay version I was using, 1.21 (!) works fine with the Portrait