Checking if your kit is complete... Looks good Writing Makefile for DB::Ent Microsoft (R) Program Maintenance Utility Version 7.10.3077 Copyright (C) Microsoft Corporation. All rights reserved. cp Ent.pm blib\lib\DB\Ent.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..14 ok 1 - use DB::Ent The getpwuid function is unimplemented at blib\lib/DB/Ent.pm line 830. # Looks like you planned 14 tests but only ran 1. # Looks like your test died just after 1. NMAKE : fatal error U1077: 'C:\cpanrun\build\5-10-0\bin\perl.exe' : return code '0xff' Stop.