I have two identical metrics files. One generated by Glyphs and one generated by Filemaker.
They look identical in Textedit, the Finder says they are of the same kind (though the Filemaker file is twice the size in bytes) but Glyphs gives an error when importing the Filemaker file.
What’s going wrong? Glyphs says something about UTF-8, though I’m positive that the Filemaker export is UTF-8 as well.
Update: synchronous post, saw yours a split second too late, sorry. You can open the UTF-16 in a text editor (TextMate, TextWrangler, etc.) and save it as UTF-8.