Powerplay cubes drill throughs are not working in prod..

[jd]

Hi I have question about powerplay studio cubes drill throughs..

I have migrated cubes from series 7 to cognos8 and set the drill through definations in cube package level.  we have succeessfully tested cubes and all the drill throughs in development environment. Then we moved all the packages and cubes to production. In prod I can open the cubes but when I tried to drill throguh it says

"There are no drill through targets available. Verify your selection or confirm that drill through is available at this level."

but I have all the drill throughs set up using drill through defination..

any idea what was the issue here??