If you get the error on smaller/fewer files, please include those instead.
parallel: This should not happen. You have found a bug.
Please contact <parallel@gnu.org> and include:
* The version number: 20150422
* The bugid: pidtable format: 2515 2333
* The command line being run
* The files being read (put the files on a webserver if they are big)
Ashish Beck
5th Year, Integrated M.Sc
Department of Biology
UM-DAE Centre for Excellence in Basic Sciences, Mumbai