Phase Diagram Calculation using Phb command

Hi,

I used maps to build the cluster expansion and constructed the convex hull successfully. Now I’m using phb to generate the phase diagram, but the command gets stuck at:

Looking for phase transition…

I believe this means the system has reached a region of metastability, but I’m not sure how to proceed.

Should I use phb with one GS and one disordered phase, or two GS structures? What’s the best way to handle this situation?

Thanks