I've looked for this application on various websites, but it appears that no information is provided related to starting new Projects. This could be a permissions issue or the software is bugged. My advice is to add a new user to check its permissions and the way it works and if indeed it works, then replace all the users and create new ones. Additionally, if you still experience the same error, reinstall the application and add all the users one more time.
There is also the possibility to get in touch with the developers. Go to Help > About and look for contact options.