I'm not sure what's supposed to be working and what not, but looks like there's not a bug for this; Niklas says it's related to ULS on Meta, IIRC.
As anonymous, http://meta.wikimedia.org/w/index.php?title=Special:Translate&taction=translate&language=it&group=page-Stewards&tux=1&filter=!translated&action=translate shows a spinning "Loading messages..." forever.
On the other hand if you select an aggregate group it works because the normal messages list is loaded: http://meta.wikimedia.org/w/index.php?title=Special%3ATranslate&taction=translate&group=agg-Fundraising_2012&language=it&limit=100&task=untranslated&tux=1
Now if you switch to a subgroup (which doesn't look complete from the bars) you get "No messages to show.": http://meta.wikimedia.org/w/index.php?title=Special:Translate&taction=translate&group=page-Fundraising+2012%2FTranslation%2FDrop+down+banner&language=it&limit=100&task=untranslated&tux=1&filter=
Now, the link "All" does nothing (another bug, same logged in), but if you ctrl-click "All" and re-add tux=1 (another bug) you get again the perennial "Loading messages..." http://meta.wikimedia.org/w/index.php?title=Special:Translate&filter=&group=page-Fundraising+2012%2FTranslation%2FDrop+down+banner&language=it&limit=100&task=custom&tux=1&action=translate

Everything works and translations are saved with tux=0, and... perhaps even with tux=1, but I got lost in some English errors and now I forgot.

Version: unspecified
Severity: normal