Concrete5 add sub page (page not found) - concrete5

Question

I try to add sub page of home page. After i clicked add page button, it redirects to page not found. This happened also when I tried to log in via custom login page, but then I created new controller, and it works. I guess they are a similar problem.
This is the form to add page. The action value is http://rc.bappenas.go.id/index.php?cID=5023&ccm_token=1441182812:061784e9bfe5b07adb7e5c876e010d09
<form method="post" action="<?php echo $c->getCollectionAction()?>" id="ccmAddPage" onsubmit="jQuery.fn.dialog.showLoader()" class="dialog-form">
<input type="hidden" name="rel" value="<?php echo $_REQUEST['rel']?>" />
<input type="hidden" name="ctID" value="<?php echo $_REQUEST['ctID']?>" />
<div id="ccm-add-page-information">
<h4><?php echo t('Standard Properties')?></h4>
<?php $form = Loader::helper('form'); ?>
<div class="clearfix">
<?php echo $form->label('cName', t('Name'))?>
<div class="input"><input type="text" name="cName" value="" class="text span6" onKeyUp="ccm_updateAddPageHandle()" ></div>
</div>
<div class="clearfix">
<?php echo $form->label('cHandle', t('URL Slug'))?>
<div class="input"><input type="text" name="cHandle" class="span3" value="" id="cHandle">
<img src="<?php echo ASSETS_URL_IMAGES?>/loader_intelligent_search.gif" width="43" height="11" id="ccm-url-slug-loader" style="display: none" />
</div>
</div>
<div class="clearfix">
<?php echo $form->label('cDatePublic', t('Public Date/Time'))?>
<div class="input">
<?php
$dt = Loader::helper('form/date_time');
echo $dt->datetime('cDatePublic' );
?>
</div>
</div>
<div class="clearfix">
<?php echo $form->label('cDescription', t('Description'))?>
<div class="input">
<textarea name="cDescription" rows="4" class="span6"></textarea>
</div>
</div>
<?php
$attribs = $ct->getAvailableAttributeKeys();
$mc = $ct->getMasterTemplate();
?>
<?php if (count($attribs) > 0) { ?>
<h4><?php echo t('Custom Attributes')?></h4>
<?php
ob_start();
foreach($attribs as $ak) {
if (is_object($mc)) {
$caValue = $mc->getAttributeValueObject($ak);
}
?>
<div class="clearfix">
<label><?php echo $ak->getAttributeKeyName()?></label>
<div class="input">
<?php echo $ak->render('composer', $caValue); ?>
</div>
</div>
<?php }
$contents = ob_get_contents();
ob_end_clean(); ?>
<script type="text/javascript">
<?php
$v = View::getInstance();
$headerItems = $v->getHeaderItems();
foreach($headerItems as $item) {
if ($item instanceof CSSOutputObject) {
$type = 'CSS';
} else {
$type = 'JAVASCRIPT';
} ?>
ccm_addHeaderItem("<?php echo $item->file?>", '<?php echo $type?>');
<?php
}
?>
</script>
<?php print $contents; ?>
<?php } ?>
</div>
<div class="dialog-buttons">
<?php echo t('Cancel')?>
<input type="submit" onclick="$('#ccmAddPage').submit()" class="btn primary ccm-button-right" value="<?php echo t('Add Page')?>" />
</div>
<input type="hidden" name="add" value="1" />
<input type="hidden" name="processCollection" value="1">
</form>