Failed to create deployable object

Hello All,

We have upgraded my portal,web as and developer stuido from SP14 to SP12. All the web dynrpo applications on the portal pages have stopped functioning. I cannot click on any of the web dynpro application controls nor do these applications show

images in caption fields. All the other portal components are working fine. The web dynpro application too work fine when I try to test them off the Web AS.Please advice.

The error message i get is

Failed to create deployable object resources/sap.com since it is not a webdynpro object

Thanks