Roo shell does not start after project creation

Steps to reproduce:

• start STS with a fresh workspace
• create a Roo project
• delete the created Roo project (also delete the content on disk in the delete dialog)
• create a new Roo project with the same name

The wizard doesn't complain about anything, since there is no project in the workspace or on disc with the name. The project is then created correctly, but the Roo Shell doesn't open correctly. It stays in the mode "please standby..."