Hi Stefano,
Looks as if that slid right past me! Download this file:
http://www.projectpluto.com/vizier.tdf (about 16 KBytes)
and put it in your Guide folder. It's basically identical to
the one you've got, except that SDSS-5 has been replaced by
SDSS-6. That also involved some rearrangement of columns, so
it's not enough to just edit your current 'vizier.tdf' file to
change 'sdss5.txt' to 'sdss6.txt'. You really do need the above
version.
Other than this bug (now fixed), I've heard silence regarding
problems with the current "in-testing" version, so I think it'll
become official as soon as I get time to revise the Web site
suitably.
-- Bill