I Peter.
I'm glad you liked the Business Process Technology in version 5.0.
The process debugging was not released as it was not ready at launch time.
The good news is that we are working on it at this moment, and it will be released in a minor upgrade shortly.
You will be able to debug your processes the same way you debug the rest of the eSpace (you will not need to open or debug the taskbox).
Regards,
Lúcio Ferrão