the generated html contain
href="/w/index.php?title=Special:Brokenredirects&limit=50&offset=50"
it should be BrokenRedirects not Brokenredirects so cliking on the link gives
"You have requested a special page that is not recognized by the wiki." Test it
at the above url anf try to get next page.
See the attached patch, I'm unsure if this is the right fix since
'doubleredirects' string is used in some place in the code, see
SpecialMaintenance.php and Language[xx].php.
Version: 1.4.x
Severity: normal
OS: Linux
Platform: PC
URL: http://test.wikipedia.org/wiki/Special:BrokenRedirects