tdiary/configuration.rb in tdiary-4.0.1.20131102 vs tdiary/configuration.rb in tdiary-4.0.2

@@ -99,11 +99,14 @@
 			].each do |var|
 				def_vars1 << "#{var} = nil\n"
 				def_vars2 << "@#{var} = #{var} unless #{var} == nil\n"
 			end
 
-			unless @io_class
+			unless defined?(::TDiary::Cache) && ::TDiary::Cache.method_defined?(:store_cache)
 				require 'tdiary/cache/file'
+			end
+
+			unless @io_class
 				require 'tdiary/io/default'
 				@io_class = IO::Default
 			end
 
 			cgi_conf = @io_class.load_cgi_conf(self)