# No Valid Objects

<figure><img src="https://1332114379-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FXMvtGN1e7aVBIxLxVC0n%2Fuploads%2Fqbu10YkZWZncceg80E4N%2F3..png?alt=media&#x26;token=79de3a73-4a36-46cb-a38d-1a65f9406d92" alt=""><figcaption></figcaption></figure>

We consider only closed polysurface objects from Rhino. If you encounter this error, it means we could not find any closed polysurfaces in your model.&#x20;

&#x20;if you massings consist of extrusions, you can convert them to polysurfaces by using the `ConverExtrusion` command. <https://docs.mcneel.com/rhino/7/help/en-us/options/general.htm#ConvertExtrusion>

* You can select all extrusions by using the `SelExtrusion` command.&#x20;
* With all extrusions selected you can use the `ConvertExtrusion` command with the `DeleteInput` option.

<figure><img src="https://1332114379-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FXMvtGN1e7aVBIxLxVC0n%2Fuploads%2F6XfbwMFoCswZmV1Uq1Ml%2FNoValidObjectsExtrusion.gif?alt=media&#x26;token=3cdff003-4037-4da0-8b21-29952d1cccb5" alt=""><figcaption></figcaption></figure>

if your massings consist of meshes, please rebuild them as closed polysurfaces.