Dock6 amber score 复合物打分为nan

yaoshi1206

新手求助：Dock6.9  amber score输出结果Amber score 为nan，这样的结果合理吗？
Anchors:                1
Orientations:                1
Conformations:                1

                         Amber_Score:                    nan
                Amber_complex_energy:                 nan
               Amber_receptor_energy:         -806.187372
                 Amber_ligand_energy:           -7.003121

Computing the receptor energy:

Done computing the receptor energy.
Done initializing Amber_Score.


Reading the ligand anchor_and_grow_scored.1 input files.

Number of ligand strands is 1
Number of ligand residues is 1
Number of ligand atoms is 55

Reading the complex charged.anchor_and_grow_scored.1 input files.
Number of complex strands is 4
Number of complex residues is 457
Number of complex atoms is 7210

**************************************
Computing the ligand energy:

Minimization reached the maximum number of iterations.
The random number is 1454538876
Minimization reached the maximum number of iterations.
Done computing the ligand energy.


**************************************
Computing the complex energy:

Minimization terminated due to a nondecreasing function value.
The random number is 1454538876
Minimization terminated due to a nondecreasing function value.
Done computing the complex energy.


Energy of the complex charged.anchor_and_grow_scored.1 is nan               
Energy of the receptor charged is 806.187372094     
Energy of the ligand anchor_and_grow_scored.1 is 7.0031212578