Layout contents spontaneously vanished

All contents of a Layout I was working on have vanished. All layers on, nothing hidden.

I tried to restore the Layout by Reverting to a previous version. It restored most of it, but as soon as I clicked on the Layout after restoring everything just disappeared again.

Not seen this before. Anyone? I can’t think what would cause this.

Thanks.

Pasting from a previous version into a fresh Layout works. Pasting into the existing empty Layout remains empty.

Hi Neil -
There isn’t much information here that we can use to troubleshoot this issue.
Please post both the output of the Rhino SystemInfo command and a 3dm file that we can take a look at.
-wim

User error after all. I figured it out while trying to create a clean file for you. For some reason Layout On became switched off on the group of layers on that Layout, effecting that Layout only.

I’ll try to remember to view Layers in a full window with a view of all the lightbulbs in future.

Thanks

Thinking how to manage this better, as Layers can have different states in different Layouts, is there a way to apply and lock a Layer State to a Layout?

Hi Neil -

There currently isn’t a way to do that, no.
Something like this might help in the future:
RH-10770 Bake to PictureFrame
-wim