My wife just upgraded to OS 10.12.6. She uses Grapher to make pictures for work. Now Grapher can no longer read her old .gcx files. She had a template she was using a lot. So, she had to remake the template in the new Grapher. It worked at first, but now Grapher won't even open that file. Has anyone had this happen? Is there a potential fix? I tried to Google, but no one seems to care about Grapher.

  • I am looking for a possible fix as well. I have some Grapher files from a few years ago that didn't open -- I thought perhaps they were corrupt. I tried another that was created in 2014, but I last opened it in July 2017. Now suddenly I am getting this error. Commented Nov 20, 2018 at 19:37


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