Checking if your kit is complete... Looks good Couldn't open Makefile.PL in D:\cpanrun\depot\main\contrib-patched\perl\CPAN\src\Math-Macopt\macopt++ at d:/cpanrun/build/5-6-1/lib/ExtUtils/MakeMaker.pm line 152 Writing Makefile for Math::Macopt Microsoft (R) Program Maintenance Utility Version 6.00.8168.0 Copyright (C) Microsoft Corp 1988-1998. All rights reserved. cp Macopt.pod blib\lib\Math\Macopt.pod cp Macopt.pm blib\lib\Math\Macopt.pm NMAKE : fatal error U1073: don't know how to make 'macopt.o' Stop. NMAKE : fatal error U1077: 'cd' : return code '0x2' Stop.