Bug / Crash Errors when ending playmode

[TheMunk]

So while I fixed the in-editor errors I'm still occasionally getting some crashes when entering playmode, and I found this in the error.log of the crash:

 

Code:

libOni.dll caused an Access Violation (0xc0000005)
 in module libOni.dll at 0033:421a4549.

[...]


Stack Trace of Crashed Thread 24700:
0x00007FFA421A4549 (libOni) GetPointCloudAnisotropy
0x00007FFA421983F2 (libOni) DestroySolver
0x000001E0C0313217 (Obi) Oni.DestroySolver()
0x000001E0C0311763 (Obi) Obi.ObiSolver.Teardown()
0x000001E0C031163B (Obi) Obi.ObiSolver.OnDestroy()
0x000001E0B31396D8 (mscorlib) System.Object.runtime_invoke_void__this__()

I hope there's some information here you can use to help me fix this, as our project is too deep to reset with a new clean project. 

I've attached the full error log.