2080 and VRay Next GPU issue

[M.Max]

Hello everyone
I'm trying to convince a friend to jump from other renderer to VRay GPU, but unfortunately VRay on his PC can't see any GPU devices (Dual 2080 ) and updating/downgrading to previous driver couldn't solve it .. Vray will only use CPU for rendering .
the image attached show the devices list which is empty with error related to rt-cuda .dll, What is it!?.

also a side issue is that bucket rendering is crashing with the following message :

error: The bucket sampler could not acquire V-Ray GPU interface.
[2019/Jun/6|05:42:43] Setting up 11 thread(s)
[2019/Jun/6|05:42:43] error: UNHANDLED EXCEPTION: Rendering region (0,256)-(128,384)

win 10 3ds max 2020 NVIDIA drivers (419 to 430)
Thanks in advanced.

[psanitra]

Exact thing happend to me 3 days ago after updating to Nvidia 430 driver. I got it fixed installing vray again, did you tried that?

[M.Max]

Exact thing happend to me 3 days ago after updating to Nvidia 430 driver. I got it fixed installing vray again, did you tried that?

Thanks Peter ! I will tell him to give this a try and see

[M.Max]

Just to confirm , re installing V-Ray fixed it !
Thanks again Peter

[^Lele^]

the error was a bit cryptic, but in fact said it all: the missing library comes with the V-Ray install, and sits in the bin folder.