Reading command-line arguments and input files...
Loading and checking parameter files for compatibility...
ptraj found! Using /home/farm/mirror/Programs/amber/amber11/bin/ptraj
mmpbsa_py_energy found! Using /home/farm/mirror/Programs/amber/amber11/bin/mmpbsa_py_energy for GB calculations
mmpbsa_py_energy found! Using /home/farm/mirror/Programs/amber/amber11/bin/mmpbsa_py_energy for PB calculations
Preparing trajectories for simulation...
20 frames were read in and processed by ptraj for use in calculation.

Beginning GB calculations with mmpbsa_py_energy...
  calculating complex contribution...
  calculating receptor contribution...
Segmentation fault
Error: mmpbsa_py_energy error during GB calculations!
NOTE: All files have been retained for debugging purposes. Type MMPBSA.py --clean to erase these files.