Alternatively, if you have an older version of Grapher between Grapher 3 and Grapher 8, you can open the old files in that version and resave them. If you have many files, you can use this script instead of manually opening and resaving the files:
- Download the attached convert old GRF to G7.BAS script file.
- Open the script in Grapher's Script Manager.
- Change the line: Directory = "D:\temp\Grapher\" to the desired directory that contains your GRF files.
- Click the Start/Resume (green arrow) button. New GRF files are created in the same directory with _G7 appended to the file names. These files can be opened in the current version of Grapher.
Updated February 17, 2020