AdHoc and Reviewer workflows in EBP

[Griffiths, Mark]

All,
 
Quick question: I have copied an EBP workflow which has adhoc anchors and review workflows, therefore all the right check boxes are flagged in the header data.  I have also set up possible agents for the 'to be called'workflows.
 
The Add Approver and Add Reviewer button are greyed out in the approval preview.
 
Mysteriously I can use the Adhoc anchors and Review workflow in the backend from the graphical log.
 
Any ideas to enable the buttons in the Approval Preview applet would be appreciated.
 
Yes, I have refreshed my buffers in SWU_OBUF.
 
Regards,
 
 
Mark