Looks like https://gerrit.wikimedia.org/r/#/c/260636/ broke the offsets parameter on Special:Contributions:
https://test.wikipedia.org/w/index.php?title=Special:Contributions/Kaldari&offset=20141102191202&target=Kaldari
That code hasn't hit the real wikis yet, but we'll need to SWAT deploy a fix tomorrow morning.