When I opened the glyphs file I made before, the software issued a warning: Different versions (1172) of this application previously saved this file. You have version 1287. What should I do?

Glyphs
1

Which specific version of Glyphs should I download?

2

This is just to inform you that you working with a different versions. Sometimes the behavior of a new version is slightly different. Some people rely on the old behavior, so they need to know that they opened the file in the “wrong” version. So you can just ignore this message.