It's been a while since we released the Rift/Rift S v0.2.1.1. And we are now working on the next version for Rift/Rift S.
However according to data from Unity, we acknowledged that a few people out there are still experiencing crash on Rift/Rift S v0.2.1.1.
We appreciate anyone who experiences such issue to contact us at firstname.lastname@example.org immediately! We desperately want to fix it.
Thank you very much for your support.