Convert Older Grapher Files
Older files that were created in Grapher DOS and Grapher 1 cannot be opened by the current version of Grapher. When you try to open these files, you will see:
The error message appears when trying to open older Grapher GRF files.
Send the GRF file and any associated data files to graphersupport@goldensoftware.com with a message that you need the older file converted. Technical support will convert the file for you and email you back the newer file.