Because of the change in file extension from .PAN (V1.x) to .PFP (V2.x) it is possible
to create two project files with the same name but different extensions. This can cause
the new project to overwrite image files belonging to the old project.
For example, if you already have a project called Panorama1.PAN created by V1.x and
then you use V2.x to create a new project named Panorama1.PFP, the image files for the new
project will have names that are the same as the image files for the old project:
In this situation, V2.x will silently overwrite the old image files.