# Error loading - XNurbsRhino7.rhp

**URL:** <https://discourse.mcneel.com/t/error-loading-xnurbsrhino7-rhp/135695>\
**Category:** XNurbs\
**Tags:** windows\
**Created:** [January 1, 2022, 1:24pm UTC](https://discourse.mcneel.com/t/error-loading-xnurbsrhino7-rhp/135695 "2022-01-01T13:24:01Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![user2847](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/user2847/32/349777_2.png) [@user2847](https://discourse.mcneel.com/u/user2847)\
**Post date:** [January 1, 2022, 1:24pm UTC](https://discourse.mcneel.com/t/error-loading-xnurbsrhino7-rhp/135695/1 "2022-01-01T13:24:02Z")

</div>

good afternoon.  
Xnurbs plugin worked fine on Rhino 7 and on Rhino 8 (a trial period, 11 days left)  
But when I installed Rhino 5, the plugin stopped working  
I deleted Rhino 5.  
I also deleted and reinstalled Rhino 7 and Rhino 8, but the plugin is not installed

Gives a message

Error loading - XNurbsRhino7.rhp

Unable to load XNurbsRhino7.rhp plug-in: application initialization failed

---

<div class="post-metadata">

**Author:** ![markintheozarks](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/markintheozarks/32/678563_2.png) [@markintheozarks](https://discourse.mcneel.com/u/markintheozarks)\
**Post date:** [January 1, 2022, 2:37pm UTC](https://discourse.mcneel.com/t/error-loading-xnurbsrhino7-rhp/135695/2 "2022-01-01T14:37:49Z")

</div>

Hi 2847, I had problems installing xnurbs. Mine was because of anti- virus software was not allowing it to be installed. You can always contact xnurbs support, they could help.—-Mark

---

<div class="post-metadata">

**Author:** ![user2847](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/user2847/32/349777_2.png) [@user2847](https://discourse.mcneel.com/u/user2847)\
**Post date:** [January 1, 2022, 3:11pm UTC](https://discourse.mcneel.com/t/error-loading-xnurbsrhino7-rhp/135695/3 "2022-01-01T15:11:48Z")

</div>

When I install Xnurbs automatically, the installation shows that everything was established  
But when you open Rhino, the plugin is not installed (Error loading)  
Disable antivirus did not solve the problem

 ![xnurbs](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/3/b/b/3bb81104ecf2fca31029923d408f7de6f1a9ce56.png)