I'm getting the below error, using msys on windows 7
~/Downloads/parallel-20150322/src $ ./parallel -version
parallel: This should not happen. You have found a bug.
* The version number: 20150322
* The bugid: pid_parentpid_cmd for MSWin32 missing
* The command line being run
* The files being read (put the files on a webserver if they are big)
If you get the error on smaller/fewer files, please include those instead.