Frequent Rhino 6 Crashes using Grasshopper

i’m having the same problem, I have deleted all the vray files I can find but it has not worked,

this is the crash report

System::AppDomain::CurrentDomain->UnhandledException event occurred

SENDER: Name:DefaultDomain
There are no context policies.

EXCEPTION: System.DllNotFoundException
MESSAGE: Unable to load DLL ‘VRaySDKLibrary’: The specified module could not be found. (Exception from HRESULT: 0x8007007E)
SOURCE: “VRaySDK.Net
CALL STACK
at VRay.RendererUtils.releaseVRayRenderer(IntPtr renderer)
at VRay.VRayRenderer.Finalize()