[gmx-users] Error with Energy minimisation

[Sheyore Omovie]

Hi,
I was trying out the Ribonuclease S-peptide simulation in the online 
tutorial manual.
I get the following error message when I try to do energy minimisation:
'<MPICH-MX> Error: Need to obtain the job magic number in MXMPI_MAGIC'
What could I have done wrong?
I would appreciate any help.
Regards
John

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