Index: branches/version-2_5-dev/data/class/SC_CheckError.php
===================================================================
--- branches/version-2_5-dev/data/class/SC_CheckError.php	(revision 19672)
+++ branches/version-2_5-dev/data/class/SC_CheckError.php	(revision 19741)
@@ -81,6 +81,8 @@
         }
         $this->createParam($value);
-        if( strlen($this->arrParam[$value[1]]) == 0 ){
+        if(!is_array($this->arrParam[$value[1]]) and strlen($this->arrParam[$value[1]]) == 0 ){
             $this->arrErr[$value[1]] = "※ " . $value[0] . "が入力されていません。<br />";
+        }else if(is_array($this->arrParam[$value[1]]) and count($this->arrParam[$value[1]]) == 0) {
+            $this->arrErr[$value[1]] = "※ " . $value[0] . "が選択されていません。<br />";
         }
     }