I try to build a model with my own intial model, but it failed,<br>here is the log file:<br><br><br><br>Traceback (most recent call last):<br>&nbsp; File "single.py", line 36, in ?<br>&nbsp;&nbsp;&nbsp; a.make()<br>&nbsp; File "/usr/lib64/python2.4/site-packages/modeller/automodel/automodel.py", line 98, in make<br>&nbsp;&nbsp;&nbsp; self.homcsr(exit_stage)<br>&nbsp; File "/usr/lib64/python2.4/site-packages/modeller/automodel/automodel.py", line 427, in homcsr<br>&nbsp;&nbsp;&nbsp; self.make_initial_model(aln)<br>&nbsp; File "/usr/lib64/python2.4/site-packages/modeller/automodel/automodel.py", line 441, in make_initial_model<br>&nbsp;&nbsp;&nbsp; self.generate_method(self, aln)<br>&nbsp; File "/usr/lib64/python2.4/site-packages/modeller/automodel/generate.py", line 46, in read_xyz<br>&nbsp;&nbsp;&nbsp; mdl.transfer_xyz(a, cluster_cut=-1.0)<br>&nbsp; File "/usr/lib64/python2.4/site-packages/modeller/model.py", line 200, in transfer_xyz<br>&nbsp;&nbsp;&nbsp; cluster_method)<br>_modeller.ModellerError: rdpdb___303E&gt; No atoms were read from the specified input PDB file, since the starting residue number and/or chain id in MODEL_SEGMENT (or the alignment file header) was not found; requested starting position: residue number " ", chain " "; atom file name:&nbsp; loop.pdb<br><br>