Just digging through our PHP logs and found this:
[28-Jul-2015 10:26:08 Australia/Sydney] [2015-07-28 10:26:08] EXCEPTION: (InvalidArgumentException) Argument 1 passed to PHUIObjectBoxView::setInfoView() must be an instance of PHUIInfoView, null given, called in /usr/src/phabricator/src/a pplications/people/controller/PhabricatorPeopleProfileEditController.php on line 87 and defined at [<phutil>/src/error/PhutilErrorHandler.php:200] [28-Jul-2015 10:26:08 Australia/Sydney] arcanist(head=master, ref.master=5e4f9a2bf9d2), phabricator(head=master, ref.master=3bfb43629602, custom=1), phlab(head=master, ref.master=76e00f2a51e8), phutil(head=master, ref.master=aa6cd8f7e5e5) [28-Jul-2015 10:26:08 Australia/Sydney] #0 <#2> PhutilErrorHandler::handleError(integer, string, string, integer, array) called at [<phabricator>/src/view/phui/PHUIObjectBoxView.php:131] [28-Jul-2015 10:26:08 Australia/Sydney] #1 <#2> PHUIObjectBoxView::setInfoView(NULL) called at [<phabricator>/src/applications/people/controller/PhabricatorPeopleProfileEditController.php:87] [28-Jul-2015 10:26:08 Australia/Sydney] #2 <#2> PhabricatorPeopleProfileEditController::processRequest() called at [<phabricator>/src/aphront/AphrontController.php:33] [28-Jul-2015 10:26:08 Australia/Sydney] #3 <#2> AphrontController::handleRequest(AphrontRequest) called at [<phabricator>/src/aphront/configuration/AphrontApplicationConfiguration.php:226] [28-Jul-2015 10:26:08 Australia/Sydney] #4 phlog(InvalidArgumentException) called at [<phabricator>/src/aphront/configuration/AphrontDefaultApplicationConfiguration.php:230] [28-Jul-2015 10:26:08 Australia/Sydney] #5 AphrontDefaultApplicationConfiguration::handleException(InvalidArgumentException) called at [<phabricator>/src/aphront/configuration/AphrontApplicationConfiguration.php:230] [28-Jul-2015 10:26:08 Australia/Sydney] #6 AphrontApplicationConfiguration::processRequest(AphrontRequest, PhutilDeferredLog, AphrontPHPHTTPSink, MultimeterControl) called at [<phabricator>/src/aphront/configuration/AphrontApplicationConfiguration.php:140] [28-Jul-2015 10:26:08 Australia/Sydney] #7 AphrontApplicationConfiguration::runHTTPRequest(AphrontPHPHTTPSink) called at [<phabricator>/webroot/index.php:21]