Checking if your kit is complete... Looks good 'LICENSE' is not a known MakeMaker parameter name. Writing Makefile for Math::Calculator cp lib/Math/Calculator.pm blib\lib\Math\Calculator.pm .00.8168.0 Copyright (C) Microsoft Corp 1988-1998. All rights reserved. D:\cpanrun\build\5-6-1\bin\perl.exe -Mblib -Id:\cpanrun\build\5-6-1\lib -Id:\cpanrun\build\5-6-1\lib -e "use Test::Harness qw(&runUsing D:/cpanrun/depot/main/contrib-patched/perl/CPAN/src/Math-Calculator/blib Failed 2/5 test scripts, 60.00% okay. 62/62 subtests failed, 0.00% okay. NMAKE : fatal error U1077: 'D:\cpanrun\build\5-6-1\bin\perl.exe' : return code '0xff' Stop. tests t\pod-coverage......skipped: Test::Pod::Coverage 1.04 required for testing POD coverage t\pod...............skipped: Test::Pod 1.00 required for testing POD t\stacks............FAILED tests 1-20 Failed 20/20 tests, 0.00% okay Failed Test Status Wstat Total Fail Failed List of Failed -------------------------------------------------------------------------------- t\basics.t 42 42 100.00% 1-42 t\stacks.t 20 20 100.00% 1-20 3 tests skipped.