MWS not finding task details page

Hi

An error is appearing when trying to view the details of a task.
This is a upgrade project where we are porting our first bpm and mws client task from a webmethods 712 environment to a webMethods 821.
When trying to viewing the task details an error is appearing:

   [POP.007.0006] Requested content was not found:  "/831E2A14-F19D-1B82-F30D-27BB68BF3963.task.app.details.page"

The task was registered in MWS.

Not sure what to do here, please help.

Regards
Kevin

How did you migrate the Task pages? Did you execute the migration for process models using the scripts?

-Senthil