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I forget translate some constant. Please patch to refpage/language/<lang>/modinfo.php file.
--- modinfo.php.~1.5.~	2009-07-14 18:33:36.000000000 +0900
+++ modinfo.php	2010-02-20 13:05:59.040040651 +0900
@@ -15,9 +15,11 @@
 define("_MI_REFPAGE_ADMENU1","Edit refpage info");
 define("_MI_REFPAGE_ADMENU2","Check for origin");
 define("_MI_REFPAGE_ADMENU4","Delete expired");
+define("_MI_REFPAGE_ABOUT","About refpage");
 
 //Templates
 define("_MI_RP_INDEX_TPL","List of referenced pages");
+define("_MI_RP_REFERER_TPL","Detail list of referenced page");
 
 //Configs
 define("_MI_RPCF_EXCLUDE","Not display link");