Argument "6.42_01" isn't numeric in numeric ge (>=) at Makefile.PL line 5. Checking if your kit is complete... Looks good Writing Makefile for Games::Sudoku::Component::TkPlayer Microsoft (R) Program Maintenance Utility Version 7.10.3077 Copyright (C) Microsoft Corporation. All rights reserved. cp lib/Games/Sudoku/Component/TkPlayer/Selector.pm blib\lib\Games\Sudoku\Component\TkPlayer\Selector.pm cp lib/Games/Sudoku/Component/TkPlayer/Controller.pm blib\lib\Games\Sudoku\Component\TkPlayer\Controller.pm cp lib/Games/Sudoku/Component/TkPlayer/Splashscreen.pm blib\lib\Games\Sudoku\Component\TkPlayer\Splashscreen.pm cp lib/Games/Sudoku/Component/TkPlayer/View.pm blib\lib\Games\Sudoku\Component\TkPlayer\View.pm cp lib/Games/Sudoku/Component/TkPlayer.pm blib\lib\Games\Sudoku\Component\TkPlayer.pm C:\cpanrun\build\5-10-0\bin\perl.exe -MExtUtils::Command -e cp script/tksudoku.pl blib\script\tksudoku.pl pl2bat.bat blib\script\tksudoku.pl 'pl2bat.bat' is not recognized as an internal or external command, operable program or batch file. NMAKE : fatal error U1077: 'pl2bat.bat' : return code '0x1' Stop.