After the infrastructure upgrade it appears that SGF downloads aren’t working when usernames have non-latin (english?) characters in them. It seems like before this was handled in unicode. If for example a username has chinese/japanese characters in it, the downloaded file is called “sgf.sgf” and contains the string:
Error: TypeError: The header content contains invalid characters
Verified report. Chrome on ChromeOS, Firefox on Windows 7 Enterprise, and wget under Ubuntu.
All returned the same result. This does, indeed, look like a server-side effect.
It is possible that the code that writes the SGF uses a character set that does not support the code points needed for the names in this game. I will add that the SGF generated for one of my current games does not specify any character set. The default in the specification is ‘ISO-8859-1’ aka ‘Latin1’.
This is probably a regression. I remember encountering non-Western player names when I did my work on uberdownloader last year. I will see if any of them show the same behavior we have with the reported game.