Cannot render after updating to 4.14 - solved

marktourigny

After reading about the increased rendering times with the new version, I updated last night.  When I tried to render today I only got a black screen render and couldn't use the IRAY viewport.  Consulting my log I have the following:

2020-12-07 10:51:22.448 WARNING: ..\..\..\..\..\src\pluginsource\DzIrayRender\dzneuraymgr.cpp(353): Iray [ERROR] - IRAY:RENDER ::   1.0   IRAY   rend error: Cannot render: found no usable devices.
2020-12-07 10:51:22.463 Iray Render error: Invalid parameters (NULL pointer).

When I look in the Advanced tab for Render settings I see my GPU still listed with the box ticked.  CPU box is still not ticked.  I have not changed anything in Daz and simply tried to render a file I had previously created. 

I am not technically proficient so simple advice would be best.

Any help would be much appreciated.

Linwelly

you probably need to update your graphic card driver

PerttiA

From the Nvidia site https://www.nvidia.com/Download/index.aspx

marktourigny

Thanks to both of you, that was exactly it.  Works now!