...Instructions: replace the four files propel.cc, propel_diagnostics, Galdef.cc and Galdef.h and rebuild the executable.
Add solution_method and solution_convergence to the galdef parameter file. A test GALDEF file with these parameters is galdef_54_reltest09; the diagnostics document the accuracy of the solution.
A full explanation is given in the GALPROP Explanatory Supplement http://www.mpe.mpg.de/~aws/galprop_explanatory_supplement.pdf
Thanks to Deepak Khurana for requesting and testing this update.
Now replaced by this project: http://sourceforge.net/projects/galprop
where further updates can be found.