I am following the rosetta tutorials and run into an error when attempting to relax a pdb for refinement. The "flag_input_relax" file cannot be opened by rosetta, even though I've granted myself full permissions and even changed it into an executable via chmod 755. I made a copy of the file and it could not open the copy either. Below is the command that gives me the error:
rosetta/main/source/bin/relax.default.macosclangrelease -in:file:s ~/rosetta/main/demos/tutorials/input_and_output/input_files/from_rcsb/1qys.pdb flag_input_relax
and the error is
[ ERROR ] UtilityExitException
ERROR: Cannot open file "flag_input_relax"
Please let me know what measures I can take to fix this .