If you see the following notification when you open a saved project, here's what it means, and what you can do about it:
Whenever you open an existing project file, the application automatically generates a "Lock" file in the same directory where the project file is saved.
The purpose of this is to prevent a project file from being opened simultainiosly by two or more users in a network environment. Once you save and close your project, the Lock file is automataclly deleted.
In some cases, if a project file closes unexpectedly, the lock file may still exist. In that case, the application will generate the message shown above.
If you're sure that no one else has opened the project on your network, the solution is to navigate to the directory where the project file is saved, and manually delete the Lock file:
