I can indeed see a "history"-list that I can use to undo to a certain level, but should there also be a visual storyboard somewhere?

Hi Maarten. Thanks for trying our build. It currently includes the history-saving feature. The storyboard-drawing is work in progress, and since it's changing daily, we haven't released it yet. We're asking for your help getting a diverse sample of undo-lists so we can see where the storyboard breaks and design it to be useful to more users.

Also, the prototype version has the tendecy to crash much more as the regular build. Has anyone else noticed this behaviour?

Can you describe the conditions under which it crashes? It would help us identify the bug if you happened to notice, for example, what tool you were using at the time.

Cheers, Sara