So I got into Unity VR (Vive) yesterday and played around a little, watched some tutorials and everything worked more than perfectly. Suddenly today the Controller (left) doesn't show up anymore. (http://i.imgur.com/8tNDApB.png - Hierarchy during Play mode) What's happening is that when I enter playmode, Unity should assign an index to each Controller (Like this on the Controller (right): http://i.imgur.com/REgVgOh.png)(This is Left: http://i.imgur.com/BYXofM1.png) However, the index is still "None" on the left Controller when entering playmode. I can enable the Controller Object manually and assign an Index (Device 4) to both the Controller and the Model and the Controller will start showing the correct Transform data in the inspector. In the scene I can "see" the controller too but not the model, just the XYZ axis arrows that are used to scale it, but they move around when I move the controller. I have completely reinstalled Unity over 5 times now, including everything in AppData, all assets, all registry keys and any data related to Unity. I tried the latest and the beta Unity versions. I tried SteamVR beta and the regular one. The controllers both work fine in any game and in the SteamVR home, even while running in Play Mode I can press the Home Button on the non working Controller and it works fine. I also changed the controllers once and it seems that the issue is not related to a specific physical Controller but to the "Controller (left)" in [CameraRig]. I am absolutely out of ideas, I would've loved to make my own game but Unity doesn't want me to.