We are working on finding a fix for this issue.
Adobe InDesign team
An error occurred while saving the commentJennifer Soucy commented
I had this error with Avenir, which is a default Mac font so it was EXTRA bizarre. However, turned out InDesign was getting confused because it was a "Packaged" InDesign file I had received that contained an additional copy of the font in "Document Fonts" - remove the document fonts folder, file works perfectly.Jennifer Soucy supported this idea ·