If you start a GNAT Studio the first time you it presents an empty project. I have a number of project files created in former versions. Trying to bring that project alive again does not work: An new project and open project both let you see an empty project. How can i alter that
That is strange. GNAT Studio has no special files for the projects, it usually uses the project’s GPRbuild (.gpr) file as the project file. New GNAT Studio versions should be able to just open any .gpr file no mater when they were created 