I have the same problem with ActivePerl 5.12.1 when installing Win32::Exe.
=====LOG====

C:\Perl\bin\perl.exe "-MExtUtils::Command::MM" "-e" "test_harness(0, '..\blib\lib', '..\blib\arch')" t/*.t
t/0-load.t ...
t/0-load.t ... 1/1 #   Failed test 'use Win32::Exe::InsertResourceSection;'
#   at t/0-load.t line 6.
#     Tried to use 'Win32::Exe::InsertResourceSection'.
#     Error:  Can't load 'C:\Perl\cpan\build\Win32-Exe-0.14-tbpo4b\blib\arch/auto/Win32/Exe/InsertResourceSection/InsertResourceSection.dll' for
module Win32::Exe::InsertResourceSection: load_file:═хтхЁэр  яюя√Єър фюёЄєяр ъ рфЁхёє ярь Єш at C:/Perl/lib/DynaLoader.pm line 201.
#  at (eval 4) line 2
# Compilation failed in require at (eval 4) line 2.
# BEGIN failed--compilation aborted at (eval 4) line 2.
# Looks like you failed 1 test of 1.
t/0-load.t ... Dubious, test returned 1 (wstat 256, 0x100)
Failed 1/1 subtests
t/1-basic.t ..
t/1-basic.t .. 1/1 #   Failed test 'use Win32::Exe::InsertResourceSection;'
#   at t/1-basic.t line 6.
#     Tried to use 'Win32::Exe::InsertResourceSection'.
#     Error:  Can't load 'C:\Perl\cpan\build\Win32-Exe-0.14-tbpo4b\blib\arch/auto/Win32/Exe/InsertResourceSection/InsertResourceSection.dll' for
module Win32::Exe::InsertResourceSection: load_file:═хтхЁэр  яюя√Єър фюёЄєяр ъ рфЁхёє ярь Єш at C:/Perl/lib/DynaLoader.pm line 201.
#  at (eval 4) line 2
# Compilation failed in require at (eval 4) line 2.
# BEGIN failed--compilation aborted at (eval 4) line 2.
# Looks like you failed 1 test of 1.
t/1-basic.t .. Dubious, test returned 1 (wstat 256, 0x100)
Failed 1/1 subtests

===LOG===
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