Unable to open Scene - error message displayed after hub reboot

[maxq10]

Using Scene 1,2. I had created a new Halloween scene a few days ago for some outside lights. I cannot get back into the scene to edit it - the hub just hangs and I see the spinning circle when it tries to open the scene. After a hub reboot, I saw this error message when trying to open the scene:

The logs show this:

I'm using the latest release of the Hubitat software (2.3.3.140). All other scenes open up normally and I can edit them. Everything else seems to be operating just fine.

Can anyone help me figure out what's going on?

[bravenel]

Did you by chance delete the activator device that the Scene created? I would suggest removing this Scene, and recreating it.

[maxq10]

Thanks. I'll give this a try.

[maxq10]

OK so, I was able to delete the scene. I recreated it with a different name, everything seemed fine. But once I hit "Done", I see this in the upper right corner of my browser:

It's just spinning and spinning. I clicked to the Apps screen. The new scene shows up and has the indicator that it is ON (which it is right now). But if I try to open the scene, I'm back to the screen just hanging on here:

Nothing in the logs.

[gopher.ny]

Can you PM me the hub id? I'll take a look at the engineering logs.