Can't compile on Windows x64 with dmd64 -m64

[eigenraven]

Error message:

../build/bin/win32/bob.exe -uv -c=dmd -p=windows ..

dmd -c -I.. -release -oftango-core-Array-release.obj ../tango/core/Array.d1
dmd -c -I.. -release -oftango-core-ArrayLiteral-release.obj ../tango/core/ArrayLiteral.d
dmd -c -I.. -release -oftango-core-BitArray-release.obj ../tango/core/BitArray.d

object.Exception@.\build\src\bob.d(632): Process exited normally with return code 1
Unsupported environment; neither Win32 or Posix is declared
..\tango\sys\Common.d(88): Error: static assert (0) is false

Probably there should be a check for version(Windows) instead of version(Win32)
(mostly fixed by find&replace in files regex " ^\s_version\s_(\s_Win32\s_)\s*$ " to "version(Windows)")

Platform: Windows 8 x64, intel core i5
Compiler: Custom-compiled 64-bit dmd (dmd version line: DMD64 D Compiler v2.064)