Stefan Nobis <stefan-ml@snobis.de> writes:

> "Loris Bennett" <loris.bennett@fu-berlin.de> writes:
>
>> The above was attached with Gnus 'C-c RET f', MIME type 'text/x-org'.
>
> But you attached it as inline, so the same problems could arise. To be
> sure to transfer the file unmodified, choose "attachment" as
> disposition.

Thanks for that explanation.  I don't do much attaching these days.
Here is the file again as a proper attachment.