I have read the answer you gave to simran jeet about residues in disallowed position, sugesting to build multiple models and pick the best one. Your answer conducts me to the following question. How to build multiple models, with multiple templates or performing several models with the same template and selecting that with the lowest objetive value? In this case, how many models are indicated to run? A second doubt I have is about validation. As the tutorial indictes, one should check the log file from the modeling run for runtime errors (`model-single.log') and restraint violations. I did it but I do not know how to interpretate the restrain violations. Can anyone help me to interpretate them? .I have also run the file `evaluate_model.py' to evaluate my model with the DOPE potential, but I do not know how to access to gnuplot. Finally I'd like to check the model with procheck_NT but something is wrong with the pdb file. Anyone knows other rasonable way to validate the model, preferebly a web site to perform the analysis on line. Thank you very much, Adriana