Dear Friends of 3DE!
unfortunately, an annoying bug slipped through our hands. Tracking a point, with its tracking boxes located significantly outside the field of view, can cause r1b8 to crash. Therefore, we decided to provide a fixed version today (r1b8a), because we're currently on a 3 months development cycle and don't want you guys to suffer from this until the end of September...
We're sorry for that - please update!