I did not set one of the starting and ending numbers incorrectly, please see this below pasted script

and let me know if there is a way I can generate these 500-models?  (maybe because I am requesting

too many residues?)  Thanks:) Joel 

  # 17 residue insertion
        return Selection(self.residue_range('85:A', '102:A'),
        self.residue_range('518:B', '535:B'),
        self.residue_range('951:C', '968:C'),
        self.residue_range('1384:D', '1401:D'),
        self.residue_range('1817:E', '1834:E'),
        self.residue_range('2250:F', '2267:F'),
        self.residue_range('2683:G', '2700:G'))

m = MyLoop(env,
           inimodel='7dwb_fill.B99990001.pdb', # initial model of the target
           sequence='7dwb')          # code of the target

m.loop.starting_model= 1           # index of the first loop model
m.loop.ending_model  = 500         # index of the last loop model
m.loop.md_level = refine.slow      # loop refinement method; this yields
                                   # models quickly but of low quality;
                                   # use refine.slow for better models

m.make()