Dear Developers, 
I have a fresh Centos 7 system and after installing Phenix I wanted to compile the Rosetta.refine module. (Rosetta from source version 2015.31.58019)
I have succesfully compiled Rosetta but when I try to build the dedicated Rosetta for Rosetta_refine with rosetta.build_phenix_interface after setting up PHENIX_ROSETTA_PATH and ROSETTA3_DB I get the following error message: 
[XXX@...]$ rosetta.build_phenix_interface nproc=6
False
scons: Reading SConscript files ...
Running versioning script ... Done. (0.1 seconds)
Could not find platform independent libraries <prefix>
Could not find platform dependent libraries 
Consider setting $PYTHONHOME to <prefix>[:]
ImportError: No module named site
CalledProcessError: Command '['./update_options.sh']' returned non-zero exit status 1:
  File "/usr/local/PROGRAMS/ROSETTA/PHENIX_Rosetta_refine/main/source/SConstruct", line 172:
    main()
  File "/usr/local/PROGRAMS/ROSETTA/PHENIX_Rosetta_refine/main/source/SConstruct", line 163:
    SConscript("SConscript", "build")
  File "/usr/local/PROGRAMS/ROSETTA/PHENIX_Rosetta_refine/main/source/external/scons-local/scons-local-2.0.1/SCons/Script/SConscript.py", line 614:
    return method(*args, **kw)
  File "/usr/local/PROGRAMS/ROSETTA/PHENIX_Rosetta_refine/main/source/external/scons-local/scons-local-2.0.1/SCons/Script/SConscript.py", line 551:
    return _SConscript(self.fs, *files, **subst_kw)
  File "/usr/local/PROGRAMS/ROSETTA/PHENIX_Rosetta_refine/main/source/external/scons-local/scons-local-2.0.1/SCons/Script/SConscript.py", line 260:
    exec _file_ in call_stack[-1].globals
  File "/usr/local/PROGRAMS/ROSETTA/PHENIX_Rosetta_refine/main/source/SConscript", line 28:
    subprocess.check_call(["./update_options.sh"])
  File "/usr/local/PROGRAMS/XTAL/PHENIX/phenix-1.10-2155/base/lib/python2.7/subprocess.py", line 540:
    raise CalledProcessError(retcode, cmd).
If you have any idea of what could cause the problem, I would welcome any suggestions.
I updated Phenix and I could compile phenix.rosetta_refine without problems on Centos 6.7.
Thank you very much for your time and help. 
Kind regards, 
Ludovic.