begin require 'rubygems' require 'compass-validator' rescue LoadError => e if e.message =~ /core_ext/ raise Compass::MissingDependency, <<-ERRORMSG The Compass CSS Validator is out of date. Please upgrade it: sudo gem install compass-validator --version ">= 3.0.1" ERRORMSG else raise Compass::MissingDependency, <<-ERRORMSG The Compass CSS Validator could not be loaded. Please install it: sudo gem install compass-validator ERRORMSG end end