WPC 7.4 Custom Layout Not Working

Hi

I tried to develop Custom Layout in my Netweaver 7.4 Portal.

I followed steps in the document How to Create Custom Layouts - Web Page Composer in SAP NetWeaver Portal 7.3

I was able to deploy. I got the layout appearing in the WPC Layouts.

I am able to select content on the Layout in the edit mode. But once i finished editing and click Done. The Content is not visible any more

It is like an empty page. Not sure what is happening. and when i click on Edit the content is there.  Even if i try to publish the content is not visible.

There are no Portal runtime errors. it  just refuses to render.

I saw that it is not loading wpc runtime css files etc..

can anybody help me out here.

Thanks

Krishna