Clayoo messes up my layer manager



In Rhino 6, Clayoo messes up my layer manager.
After Turning off the loading of Clayoo, it worked well again. So this is definitely a Clayoo problem.

This is how it looks like when Clayoo is loaded:


Hi @Gerard,

Thank you for the feedback, can you give us the Rhino version (_About command) and the Clayoo version (_ClayAbout command)? I’m pretty sure Clayoo only works with layers when loading a Clayoo File, has your file Clayoo Objects? Do you have Clayoo enabled (using _ClayEdit) when loading the file?

@Xavi_Marrodan did you know about this bug?



Hi MP, thank you for replying.

This is my Rhino version:
Logged in as Gerard Petersen -
Version 6
(6.1.18037.13441, 6-2-2018)

The file of the previous post doesn’t contain any Clayoo geometry and was created in Rhino 6 before Clayoo was installed. Just after installing Clayoo the unwanted layer manager behavior started. And I didn’t even started any Clayoo command. Just loading Clayoo messes up the Rhino layer manager behavior of existing files that are opened then.

This is the name of my Clayoo installation file: Clayoo_2.6.18038.4
Currently I have Clayoo disabled. When I enable Clayoo the unwanted behavior starts again instantly.


Hi @Gerard,

We have been trying to reproduce the layer problem you are having with no luck. Everything seems to work fine, and we are using the same version.

Is it happening with other files? May you send us one of them that is failing to check it out?



I have the same issue. Plus, starting Rhino is slow and I get a message saying File “C:\Users…\Toolbar\Clayoo.rui” is already open

I deleted and re-installed clayoo but the message appears again?

Here’s an old thread of the same issue where someone had a trial license installed and after deleting this trial apparently it worked.


Hi @martinsiegrist,

May you send all the information to ? If you have files with this problem It would be very helpful to attach them.

How long Rhino takes to start? Can you send us a video with Rhino starting?



… sometimes it takes up to three minutes to start. Your colleague Guiilermo Sotomayor experienced it last week.

I need to try out when exactly the layer issue arises.

Also, I have an issue with the isolate objects command which hides the selected geometry instead of hiding everything else.

The isolate issue occured once I created geometry with Clayoo. The command worked as expected just before that, same file but no Clayoo Edition mode yet.

The last thing that really doesn’t solve my problems is convert to Nurbs. The T-Splines equivalent command was actually useful. Let’s say on something like a cube, it would create 6 surfaces with the corners on the singularities. Now in Clayoo, I’d have to select the surfaces I want to combine, make a polysurface, extract edges in Grasshopper and rebuild one single surface from curve network. Maybe there’s something I didn’t understand yet but so far I’m struggling with this software