$ perl -MLWP::UserAgent -e " LWP::UserAgent->new->env_proxy " The locale codeset (cp437) isn't one that perl can decode, stopped at C:/perl/site/5.14.1/lib/Encode/Locale.pm line 87. Compilation failed in require at C:/perl/site/5.14.1/lib/LWP/UserAgent.pm line 976. $ perl -MEncode::Locale -MLWP::UserAgent -e " LWP::UserAgent->new->env_proxy " $ perl -d:Modlist -MEncode::Locale -MLWP::UserAgent -e " LWP::UserAgent->new->env_proxy " Carp 1.20 Config Encode 2.43 Encode::Alias 2.14 Encode::Byte 2.04 Encode::Config 2.05 Encode::Encoding 2.05 Encode::Locale 1.02 Exporter 5.64_03 Exporter::Heavy 5.64_03 Fcntl 1.11 HTTP::Config 6.00 HTTP::Date 6.00 HTTP::Headers 6.00 HTTP::Message 6.02 HTTP::Request 6.00 HTTP::Response 6.01 HTTP::Status 6.00 LWP 6.02 LWP::MemberMixin LWP::Protocol 6.00 LWP::UserAgent 6.02 Storable 2.30 Time::Local 1.2000 URI 1.58 URI::Escape 3.30 XSLoader 0.15 base 2.16 bytes 1.04 constant 1.21 overload 1.13 vars 1.02 warnings 1.12 warnings::register 1.02 $ perl -V Summary of my perl5 (revision 5 version 14 subversion 1) configuration: Commit id: cc92ef02098c000d945bcf93c92bdb2a0a05fa97 Platform: osname=MSWin32, osvers=5.1, archname=MSWin32-x86-multi-thread uname='' config_args='undef' hint=recommended, useposix=true, d_sigaction=undef useithreads=define, usemultiplicity=define useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef use64bitint=undef, use64bitall=undef, uselongdouble=undef usemymalloc=n, bincompat5005=undef Compiler: cc='gcc', ccflags =' -s -O2 -DWIN32 -DPERL_TEXTMODE_SCRIPTS -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -fno-strict-aliasing -mms-bitfields', optimize='-s -O2', cppflags='-DWIN32' ccversion='', gccversion='4.5.2', gccosandvers='' intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234 d_longlong=undef, longlongsize=8, d_longdbl=define, longdblsize=12 ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='long long', lseeksize=8 alignbytes=8, prototype=define Linker and Libraries: ld='g++', ldflags ='-static-libgcc -static-libstdc++ -s -L"c:\perl\5.14.1\lib\MSWin32-x86-multi-thread\CORE" -L"C:\MinGW\lib"' libpth=C:\MinGW\lib libs=-lmoldname -lkernel32 -luser32 -lgdi32 -lwinspool -lcomdlg32 -ladvapi32 -lshell32 -lole32 -loleaut32 -lnetapi32 -luuid -lws2_32 -lmpr -lwinmm -lversion -lodbc32 -lodbccp32 -lcomctl32 perllibs=-lmoldname -lkernel32 -luser32 -lgdi32 -lwinspool -lcomdlg32 -ladvapi32 -lshell32 -lole32 -loleaut32 -lnetapi32 -luuid -lws2_32 -lmpr -lwinmm -lversion -lodbc32 -lodbccp32 -lcomctl32 libc=, so=dll, useshrplib=true, libperl=libperl514.a gnulibc_version='' Dynamic Linking: dlsrc=dl_win32.xs, dlext=dll, d_dlsymun=undef, ccdlflags=' ' cccdlflags=' ', lddlflags='-mdll -static-libgcc -static-libstdc++ -s -L"c:\perl\5.14.1\lib\MSWin32-x86-multi-thread\CORE" -L"C:\MinGW\lib"' Characteristics of this binary (from libperl): Compile-time options: MULTIPLICITY PERL_DONT_CREATE_GVSV PERL_IMPLICIT_CONTEXT PERL_IMPLICIT_SYS PERL_MALLOC_WRAP PERL_PRESERVE_IVUV PL_OP_SLAB_ALLOC USE_ITHREADS USE_LARGE_FILES USE_PERLIO USE_PERL_ATOF Built under MSWin32 Compiled at Jul 22 2011 00:38:35 @INC: C:/perl/site/5.14.1/lib/MSWin32-x86-multi-thread C:/perl/site/5.14.1/lib C:/perl/5.14.1/lib/MSWin32-x86-multi-thread C:/perl/5.14.1/lib .