# V-Ray won't open - need help

**URL:** <https://discourse.mcneel.com/t/v-ray-wont-open-need-help/39208>\
**Category:** V-Ray\
**Created:** [November 30, 2016, 3:48pm UTC](https://discourse.mcneel.com/t/v-ray-wont-open-need-help/39208 "2016-11-30T15:48:36Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![arail](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/arail/32/503856_2.png) [@arail](https://discourse.mcneel.com/u/arail)\
**Post date:** [November 30, 2016, 3:48pm UTC](https://discourse.mcneel.com/t/v-ray-wont-open-need-help/39208/1 "2016-11-30T15:48:36Z")

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Need help -

When I launched Rhino this morning I get this message:  
Unable to load VRayForRhino.rhp plug-in: no class derived from CRhinoPlugin in plug-in file

When I have the program open and I click on the render icon I get this message:  
Source: Microsoft VBScript runtime error  
Error: Object required: 'Rhino.GetPluginObject(…)'  
Line: 4  
Char: 0  
Code:

I need to get to work. Can anyone help?  
I"ve also posted this in the Chaos Group forum

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**Author:** ![arail](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/arail/32/503856_2.png) [@arail](https://discourse.mcneel.com/u/arail)\
**Post date:** [November 30, 2016, 5:17pm UTC](https://discourse.mcneel.com/t/v-ray-wont-open-need-help/39208/2 "2016-11-30T17:17:59Z")

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I found this topic and followed the instructions at the end of the thread, deleting the entry indicated and that solved the problem.

> [@No class derived from CRhinoPlugIn in plug-in file](https://discourse.mcneel.com/t/no-class-derived-from-crhinoplugin-in-plug-in-file/11254/28):
>
> All, I think this might be caused by altering the AssemblyInfo.cs file. I have not looked extensively but this error can be reproduced when more than one culture is added to the list.

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**Author:** ![dale](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/dale/32/685184_2.png) [@dale](https://discourse.mcneel.com/u/dale)\
**Post date:** [November 30, 2016, 5:24pm UTC](https://discourse.mcneel.com/t/v-ray-wont-open-need-help/39208/3 "2016-11-30T17:24:00Z")

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@matt_newberg, is there any help you can provide?

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**Author:** ![foreigner](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/foreigner/32/501647_2.png) [@foreigner](https://discourse.mcneel.com/u/foreigner)\
**Post date:** [December 1, 2016, 12:07pm UTC](https://discourse.mcneel.com/t/v-ray-wont-open-need-help/39208/4 "2016-12-01T12:07:54Z")

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Hello , Which a v-ray version you are using for Rhino ?