I can't start a new project
I can't open projects. I just updated the new version and it does not allow me to start new projects

The latest Beta builds of version 22.6 has the File > New Project menu command selectable in Starter mode, and switches to the Home screen to select a new puppet.
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David Simons (Adobe) commented
In Starter mode, the only way to create a new project is to click the Home button in the upper-left, and then choose or import a puppet.
If you want a new Pro mode project, first switch to Pro mode and then the New Project command will be enabled.
We plan to change it so that New Project in Starter mode just switches you back to Home so it's clear that you need to pick a puppet to start a new project. Sorry for the confusing UI.