ReferenceError: Uploader is not defined in magento 1.9.3

Question

after update to new version 1.9.3. the Uploader is not working anymore. given below error.i upldate my code but still the same.

var uploader = new

Uploader({"uploaderConfig":{"chunkSize":1073741824,"withCrede...

below is my code

class Spacename_Modulename_Block_Adminhtml_Modulename_Edit_Tab_Images extends Mage_Adminhtml_Block_Widget {

    protected $_uploaderType = 'uploader/multiple';

    protected function _prepareForm() {
        $data = $this->getRequest()->getPost();
        $form = new Varien_Data_Form();
        $form->setValues($data);
        $this->setForm($form);

        return parent::_prepareForm();
    }

    protected function _prepareLayout() {
        $this->setChild('uploader', $this->getLayout()->createBlock($this->_uploaderType)
        );

        $this->getUploader()->getUploaderConfig()
                ->setFileParameterName('image')
                ->setTarget(Mage::getModel('adminhtml/url')->addSessionParam()->getUrl('*/*/image'));

        $browseConfig = $this->getUploader()->getButtonConfig();
        $browseConfig
                ->setAttributes(array(
                    'accept' => $browseConfig->getMimeTypesByExtensions('gif, png, jpeg, jpg')
        ));


        return parent::_prepareLayout();
    }

}

js code

<script type="text/javascript">
//<![CDATA[
var <?php echo $_block->getJsObjectName(); ?> = new Product.Gallery('<?php echo $_block->getHtmlId() ?>', <?php echo $_block->getImageTypesJson() ?>);
//]]>
</script>

Answer 1

After lot of searching i found that magento 1.9.3.0 they remove the flash uploader so js file need to run uploader add these file in head

<reference name="head">
            <action method="addJs"><file>lib/uploader/flow.min.js</file></action>
            <action method="addJs"><file>lib/uploader/fusty-flow.js</file></action>
            <action method="addJs"><file>lib/uploader/fusty-flow-factory.js</file></action>
            <action method="addJs"><file>mage/adminhtml/uploader/instance.js</file></action>
</reference>

Answer 2

I solved this problem by adjusting the file permissions.

Problem was that the above mentioned (new) Javascript files could not be loaded. A 403 error code has been thrown.

After setting file permissions on the directories

js/image/adminhtml/uploader

and

js/lib/uploader,

the upload button works correctly again!

Answer 3

Whereabouts are we supposed to add:

<reference name="head">
            <action method="addJs"><file>lib/uploader/flow.min.js</file></action>
            <action method="addJs"><file>lib/uploader/fusty-flow.js</file></action>
            <action method="addJs"><file>lib/uploader/fusty-flow-factory.js</file></action>
            <action method="addJs"><file>mage/adminhtml/uploader/instance.js</file></action>
</reference>

I'm not sure what you mean by head