Even a stable build has quirks. Here is how to fix the top three errors for this specific version:
While VRay 6 introduced Hybrid (CPU+GPU), version 70001 stabilizes it. Memory management is vastly improved; scenes that crashed in VRay 6 due to Out-of-Memory (OOM) errors now render in 70001 by intelligently swapping assets between system RAM and GPU VRAM. vray 70001 for sketchup 20212024
Solution: VRay 70001 requires the Chaos License Server to run as a service. Even a stable build has quirks