Quitting the program sometimes
shows a message saying PFactory quit unexpectedly
5.0 - 5.2.2748 Mac Edition only
Sometimes when you quit the application normally, you receive a message
The application PFactory quit unexpectedly
This error occurs when you have an unsaved project file.
The program asks whether you want to save the changes to your project.
If you answer "Yes", it saves your project and then produces the error
No work is lost. This error occurs as the program is terminating after
the project file has been saved.