Grapher DOS and Grapher for Windows version 1 files are no longer supported. If you have files from these older programs, you can use Golden Software's online file converter to convert it to a newer format. Or, send the GRF and all associated data files to GrapherSupport@GoldenSoftware.com and we will convert them to the newer format for you.
In addition, Grapher has the ability to save graphs so that slightly older versions can open the GRF file. To save the graph in an older format, open the file in the current version and click the File | Save As command. Set the Save as type to one of the older Grapher File GRF, Grapher Project GPJ, or Grapher Template GRT formats. The file can be opened in the specified older version and all newer versions. For instance, if a file is saved in Grapher 9 File (*.grf) format, it can be opened in any version after Grapher 9.
Updated March 29, 2016