Jade error while migrating to Meteor 1.3.1

Hi, I am migrating my Meteor 1.2.1 app to Meteor 1.3.1. App was working without errors in 1.2.1 but after update I am getting JADE syntax errors.
lib/views/search/request-modal/request-modal.jade: Jade syntax error:
Expected identifier, number, string, boolean, or null
{{#if @index}}
^
packages/compileJade/plugin/handler.js:54:1: Cannot read property ‘head’ of
undefined (compiling lib/views/search/request-modal/request-modal.jade) (at
fileModeHandler)
lib/views/search/search.jade: Jade syntax error: Expected IDENTIFIER
remove-filter-{{@index}}
^
packages/compileJade/plugin/handler.js:54:1: Cannot read property ‘head’ of
undefined (compiling lib/views/search/search.jade) (at fileModeHandler)