@Woodcutterty, that's for pointing out that other card. This one appears to be a duplicate. From what I can tell on that other card, the whole campaign is up and running at the moment, so I'll close this and consider the other done.
@Woodcutterty, It looks like that revision was part of a deleted page and you don't have rights to view it. See https://nl.wikipedia.org/wiki/?oldid=145641159.
We won't be able to extract features for deleted revisions anyway, so I recommend just marking the revision "unsure" and moving on.
Translations appear to have only been partially implemented. This is what I'm seeing: https://gyazo.com/2d610d69ee3829325fcec58a75258e9a
Note that translations like 'werkset opvragen', 'openen', 'werkset', 'opslaan' and 'verschil voor bewerking $1' have been implemented, but 'Damaging?', 'Good faith?' and 'Unsure?' are still untranslated. The same goes for the mouse-over text that goes with the information icons. All are listed on https://meta.wikimedia.org/wiki/Wiki_labels/Interface_translation and https://meta.wikimedia.org/wiki/Wiki_labels/Interface_translation/Edit_quality as having been implemented though.
It does, thanks! I've posted a message about the campaign in the local village pump yesterday, and several people are already participating (over 800 labels have been created at this moment). So far, one participant reported getting the 'revision not found' error for one revision shown, but otherwise it seems to be working fine.
Reporting a possible bug: every now and then, a piece of the workset appears to contain no separate revision. Instead it shows the previously selected revision. Example:
This is the 36th revision shown in a workset: https://gyazo.com/8ae1d9d1ff53cbe2b7c25614d06ddc9b
When I select the 37th revision, I see the same one: https://gyazo.com/f5ca72fafdc8b283f50a51a502053b48
This is the 38th revision in that same workset: https://gyazo.com/9373d47bd1ca0ef97536d1558ce4df94
Now when I select the 37th again, I see that revision: https://gyazo.com/29ef4a9885d65f6df8be0b47c63f7d0e
I mark these seemingly empty revisions as 'Unsure?'.