Export Result after creating Greek letters

I’ve just created Greek letters in a font, and since then this I can no longer export it. And if I delete those greek characters it works again.

Here is the export result:

Error: not in range -32767 … 32767 (text was “9223370000000000000”)
No File was created.

I’ve tried a lot of things to settle this but without success.
Please help.


can you send me the .glyphs file?

It’s ok I just fixed it.
I just cut and pasted my letters to another file and that’s perfectly working now.
But I still don’t know what the problem was.


it would be really great if you could send me the old file that I can prevent the problem in the future.