Ckeditor Youtube Plugin not rendering videos

Hi! there,

I am using Ckeditor 4.3.1 and i have installed this plugin from here 'http://ckeditor.com/addon/youtube'. It works well while pasting links and code of videos, shows correctly when i previewed it. It is not rendering it after i submitting it to the Database when i check it out the pages on browser its just blank page. I have checked out the HTML through view page source this is what i got from it

<p>
<invalidTag height="300" width="400">
  <param name="movie" value="http://www.youtube.come/v/x_elT6zkqN0&amp;h1=en&amp;fs=1" />
  <param name="allowFullScreen" value="true" />
  <param name="allwoscriptaccess" value="always" />
   <param name="wmode" value="transparent" />
   <invalidTag allowfullscreen="true" 
                 allowscriptaccess="always" height="300" 
                 src="http://www.youtube.com/v/x_elT6zkqN0&amp;h1=en&amp;fs=1" 
                 type="application/x-shockwave-flash" width="400" 
                 wmode="transparent">
    </embed>
</object>
</p>


here i don't understand why I am getting Invalidtag instead object and Embed tags ? Can anyone please help me out how to make it working?

this is what i have in my config.js

CKEDITOR.editorConfig = function( config ) {
	// Define changes to default configuration here. For example:
	// config.language = 'fr';
	// config.uiColor = '#AADC6E';
	config.extraPlugins = 'imagebrowser,strinsert,youtube';
	config.filebrowserImageBrowseUrl = '/admin/assets/cffm/cffm.cfm?editorType=cke&EDITOR_RESOURCE_TYPE=image';
	config.filebrowserImageUploadUrl = '/admin/assets/cffm/cffm.cfm?action=QuickUpload&editorType=cke&EDITOR_RESOURCE_TYPE=image';
	config.allowedContent = true;
};

Thanks
Mohammed Suleman Khan