This article provides steps to resolve the Unable to load VrayForRhino.rhp error in V-Ray for Rhino:
In case of getting Unable to load VrayForRhino.rhp error while starting V-Ray in Rhino these steps should solve the issue:
- Start Rhino;
- If you are using V-Ray 7 - open Windows explorer and navigate to C:\Program Files\Chaos\V-Ray\V-Ray for Rhinoceros\V8 (or V7, V6 depending on the version of Rhino). For older V-Ray versions navigate to C:\Program Files\Chaos Group\V-Ray\V-Ray for Rhinoceros\V8;
- Drag the file named VRayForRhino.rhp from the folder with left mouse button and drop it in Rhino`s viewport;
- Try using V-Ray, if it works restart Rhino and see if V-Ray will load automatically.
If it is not loading automatically then in Rhino click on the drop down menu Tools>Options>Plug-ins. Find V-Ray right click on it and make sure that the load protection is disabled. Restart Rhino and see if the plugin loads.