Dear All, Greetings. I use strawberry perl on windows 7. I use command "perl-MCPAN -e shell" to install perl modules from CPAN. When I was installing Padre (Perl IDE) by issuing command cpan> install Padre and the process was in the middle then there was power trip due to which my PC rebooted. Now whenever I try to load perl shell (perl -MCPAN -e shell) on perl cmmand line (DOS) it gives following fatal error ************************************************************** Microsoft Windows Version 6.1.7601 Copyright (c) 2009 Microsoft Corporation. All rights reserved. C:\>perl -MCPAN -e shell Argument "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0" isn't numeric in numeric eq (==) at C:/strawberry/perl/lib/CPAN.pm line 728. There seems to be running another CPAN process (pid ). Co ntacting... Can't kill a non-numeric process ID at C:/strawberry/perl/lib/CPAN.pm line 733. ************************************************************** I rebooted my PC but invain. Please suggest problem resolution and throw some pointers. Regards, perl_omens