Since a pull this morning, I am getting the following problem:
[2015-03-18 14:54:44] EXCEPTION: (InvalidArgumentException) Argument 1 passed to PHUIHeaderView::addActionLink() must be an instance of PHUIButtonView, instance of PhutilSafeHTML given, called in /var/www/phabricator/src/applications/owners/controller/PhabricatorOwnersDetailController.php on line 204 and defined at [<phutil>/src/error/PhutilErrorHandler.php:200]
arcanist(head=master, ref.master=b961869edac9), libphalias(), libphremoteuser(head=master, ref.master=1def4e2d7f07), phabricator(head=master, ref.master=1e4be36484af, custom=2), phutil(head=master, ref.master=ce3959b4046f)
#0 PhutilErrorHandler::handleError(integer, string, string, integer, array) called at [<phabricator>/src/view/phui/PHUIHeaderView.php:76]
#1 PHUIHeaderView::addActionLink(PhutilSafeHTML) called at [<phabricator>/src/applications/owners/controller/PhabricatorOwnersDetailController.php:204]
#2 PhabricatorOwnersDetailController::processRequest() called at [<phabricator>/src/aphront/AphrontController.php:33]
#3 AphrontController::handleRequest(AphrontRequest) called at [<phabricator>/src/aphront/configuration/AphrontApplicationConfiguration.php:196]
#4 AphrontApplicationConfiguration::processRequest(AphrontRequest, PhutilDeferredLog, AphrontPHPHTTPSink) called at [<phabricator>/src/aphront/configuration/AphrontApplicationConfiguration.php:121]
#5 AphrontApplicationConfiguration::runHTTPRequest(AphrontPHPHTTPSink) called at [<phabricator>/webroot/index.php:19]
Last pull was about a week ago, but Owners isn't a frequently used application, so it may have gone unnoticed longer than that...