WS00400012 Release for Payment Problem

[Thaddeus> <Gorbal]

Dear Experts,
 
We are in the update process, from 4.5 to 4.6c and having a problem
with getting WS00400012, Release for Payment, to work.
 
When an invoice over $50,000  is created (using FB60) the BSEG.Created
is raised and WS00400012 started.
 
It looks like WI is created but not sent to approvers.  It seems the
problem is
the subworkflow WS00400011 where the agent assignment takes place  .
 
The agents asignment seems to be correct, org structure refreshed,
customization done.
 
Your help will be greatly appreciated.
 
Thanks,
Thad Gorbal