Thank you reporting.

There is I forgot to changing code.
--- blocks/ccenter_block_form.php	15  6月 2008 22:57:15 +0900	1.3
+++ blocks/ccenter_block_form.php	01  4月 2009 16:17:17 +0900	
@@ -31,7 +31,7 @@
     $items = get_form_attribute($form['defs']);
     assign_form_widgets($items);
     $form['items'] =& $items;
-    $form['action'] = XOOPS_URL.'/modules/'.basename(dirname(dirname(__FILE__))).'/index.php?form='.$form['formid'];
+    $form['action'] = 'index.php?form='.$form['formid'];
     $template = render_form($form, 'form');
     return array('content'=>$xoopsTpl->fetch('db:'.$template));
 }

Not well do testing, not using myself. X-(