Checking if your kit is complete... Looks good Writing Makefile for Math::RungeKutta cp RungeKutta.pm blib\lib\Math\RungeKutta.pm Version 6.00.8168.0 Copyright (C) Microsoft Corp 1988-1998. All rights reserved. D:\cpanrun\build\5-6-1\bin\perl.exe -Iblib\arch -Iblib\lib -Id:\cpanrun\build\5-6-1\lib -Id:\cpanrun\build\5-6-1\lib test.pl 1..6 ok 1 - rk2 ok 2 - rk4 ok 3 - rk4_classical ok 4 - rk4_ralston ok 5 - rk4_auto(epsilon) ok 6 - rk4_auto(errors) Installing D:\cpanrun\build\5-6-1\site\lib\Math\RungeKutta.pm Writing d:\cpanrun\build\5-6-1\site\lib\auto\Math\RungeKutta\.packlist Appending installation info to d:\cpanrun\build\5-6-1\lib/perllocal.pod