How to Dismiss the New Media Manager Pop-up?

This popup has been created by on of the plugins you have added to your blog. You should identify the plugin by disabling plugins one at a time and then post your issue in the support forum for that plugin.

Thank you, have deleted “Use Google Libraries”

I have solved it!
Go to wp-admin\includes\template.php and delete:

public static function pointer_wp350_media() {
		$content  = '<h3>' . __( 'New Media Manager' ) . '</h3>';
		$content .= '<p>' . __( 'Uploading files and creating image galleries has a whole new look. Check it out!' ) . '</p>';

		self::print_js( 'wp350_media', '.insert-media', array(
			'content'  => $content,
			'position' => array( 'edge' => is_rtl() ? 'right' : 'left', 'align' => 'center' ),
		) );
	}

Doesn’t work for me. That address can’t be found.

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