Warning: prerequisite Math::Calculus::Expression 0.2 not found. We have 0.1. Checking if your kit is complete... Looks good Writing Makefile for Math::Calculus::TaylorSeries Microsoft (R) Program Maintenance Utility Version 7.10.3077 Copyright (C) Microsoft Corporation. All rights reserved. cp TaylorSeries.pm blib\lib\Math\Calculus\TaylorSeries.pm Microsoft (R) Program Maintenance Utility Version 7.10.3077 Copyright (C) Microsoft Corporation. All rights reserved. C:\cpanrun\build\5-10-0\bin\perl.exe "-Iblib\lib" "-Iblib\arch" test.pl 1..6 # Running under perl version 5.010000 for MSWin32 # Win32::BuildNumber 1001 # Current time local: Wed Jan 9 17:00:09 2008 # Current time GMT: Thu Jan 10 01:00:09 2008 # Using Test.pm version 1.25 ok 1 ok 2 ok 3 Can't locate object method "differentiate" via package "Math::Calculus::Expression" at blib\lib/Math/Calculus/TaylorSeries.pm line 149. NMAKE : fatal error U1077: 'C:\cpanrun\build\5-10-0\bin\perl.exe' : return code '0xff' Stop.