Generating OTF fonts

When I try to generate my OTF file, Glyphs gives me this message: “There are illigal characters in the “license” string.”

I reviewed the font info licence in “openTypeNameLicense” and i don’t see anything wrong… I’m using parenthesis and colon, but this is necessary for the license.

Thanks in advance…

There might be a nonprinting character in the string.
If you do not find it, can you send me the file?