Could not save your project. The last action you took resulted in an invalid state.

Issue
On trying to edit an element, we get this message. We are therefore unable to work on our project.

This has happened suddenly today. We are using a localhost as the app host.
Nothing has changed in our setup.

Our Project
https://studio.plasmic.app/projects/kGM64kG9nX6Qx4pnQbike3

I couldn’t reproduce the issue on your project. Is it still occurring? If so, could you specify which element is being edited and the exact changes that lead to the problem?

It might also be related to an issue with one of the code components. If you suspect that’s the case, could you try registering the recently updated code components in a separate Plasmic project and see if they’re the culprit?