I'd like to know too. If I'm working on an OR DK2 project in Unity 4, should I wait to install Unity 5 until Oculus releases their integration? Or can I use the existing "Unity 4 Integration" assets from here: https://developer.oculus.com/downloads/ ?
Changing "World" to "Worldspace" fixed the error for me.
That said, I'm a bit disappointed there's no Oculus Rift export option for the build... Maybe I'm too impatient and it'll come in a later release ? Or am I getting over something important ? :?:
Honestly, I had much better success with earlier Unity 5 betas than I do with the current version of Unity 5 with the Oculus Integration. :( I'm going to wait for either a new Oculus Integration or that Unity with the Oculus support Palmer mentioned during the Unity talk today, Unity 5 is not working at all for me.