tried it on MW 1.27 and get "Fatal error: Call to undefined function wfCheckLimits() in .../extensions/Wiretap/SpecialWiretap.php on line 18" on Special:Wiretap
@krabina thanks for the info. We're going to move several of our things to 1.27 in the hopefully-near-future, so I'll make sure to notify you when that happens.
tried it on MW 1.27 and get "Fatal error: Call to undefined function wfCheckLimits() in .../extensions/Wiretap/SpecialWiretap.php on line 18" on Special:Wiretap