Fix for bug #22004, the conformation_analysis_rdc+pcs.py N-state model sample script not working.
This is reported at https://gna.org/bugs/?22004.
The problem was that the return_api() function call needed to be after the creation of the data pipe.
Authored by: bugman 2014-05-02
Parent: [r22925]
Child: [r22927]
