Im on windows with ActivePerl, I got the latest NET::Oscar, put all the files in C:\Perl. Did "perl Build.pl" - ok "perl Build" - ok "perl Build test" - bad "perl Build install" - ok Prototype mismatch: sub Net::OSCAR::Connection::F_GETFL () vs none at (eval 5) line 1. Prototype mismatch: sub Net::OSCAR::Connection::F_SETFL () vs none at (eval 6) line 1. Prototype mismatch: sub Net::OSCAR::Connection::O_NONBLOCK () vs none at (eval 7) line 1. That showed up in the "perl Build test" and whyen i try to run the script using Net::Oscar.