Checking if your kit is complete... Looks good Writing Makefile for Apache::AuthenIMAPClient Microsoft (R) Program Maintenance Utility Version 7.10.3077 Copyright (C) Microsoft Corporation. All rights reserved. cp AuthenIMAPClient.pm blib\lib\Apache\AuthenIMAPClient.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..1 Can't locate Apache/Constants.pm in @INC (@INC contains: blib\lib blib\arch C:/cpanrun/build/5-10-0/site/lib C:/cpanrun/build/5-10-0/lib .) at blib\lib/Apache/AuthenIMAPClient.pm line 18. BEGIN failed--compilation aborted at blib\lib/Apache/AuthenIMAPClient.pm line 18. Compilation failed in require at test.pl line 12. BEGIN failed--compilation aborted at test.pl line 12. NMAKE : fatal error U1077: 'C:\cpanrun\build\5-10-0\bin\perl.exe' : return code '0x2' Stop.