Currently, if you have a Project present in the Launcher's list of Projects, and you delete it from Windows Explorer, the Launcher continues to display them.

In this scenario, when a (now deleted) Project is opened in the Launcher, it opens a blank Studio application window.

Upon restarting the Launcher, the deleted Projects are then no longer present in the Launcher's Project listing as expected.

See attached video.

Repro Steps:

1) Open the Studio Launcher, and add any Project that is not currently there.
Observe how the Project is visible and present in the Launcher's Project listing.

2) Without closing the Studio Launcher; open Windows Explorer, and navigate to the directory where the Project folder is contained, then delete the Project's entire folder.
Observe how the Project deleted in Windows explorer is still available to select from in the Launcher.

3) Click on the (now deleted) Project in the Launcher. This will open the Noesis Studio visual editor.
Observe how the Studio opens a blank Project.

4) Close the Studio visual editor, and restart the Launcher.
Observe how now, the deleted Project is no longer present, as expected.

Expected Results: The Studio Launcher doesn't display Projects that no longer exist on-disk.