Błąd kompilacji bcrypt-node.js

Próbuję zainstalować bycrpt przez npm install używając Windows 7 Ultimate x64. To jest mój dziennik instalacji:

D:\Dropbox\Projekte\RZ\Finance-Man-GUI\node_modules\bcrypt>node "C:\Program File
s\nodejs\node_modules\npm\bin\node-gyp-bin\\..\..\node_modules\node-gyp\bin\node
-gyp.js" rebuild
npm http GET https://registry.npmjs.org/mime/1.2.6
npm http 304 https://registry.npmjs.org/coffee-script
npm http 304 https://registry.npmjs.org/mkdirp
npm http 304 https://registry.npmjs.org/cssom
npm http 304 https://registry.npmjs.org/hooks/0.2.1
npm http 304 https://registry.npmjs.org/mongodb/1.2.8
npm http 304 https://registry.npmjs.org/ms/0.1.0
npm http 304 https://registry.npmjs.org/sliced/0.0.3
npm http 304 https://registry.npmjs.org/muri/0.1.0
npm http 304 https://registry.npmjs.org/mime/1.2.6
npm http GET https://registry.npmjs.org/crc/0.2.0
npm http GET https://registry.npmjs.org/pause/0.0.1
npm http GET https://registry.npmjs.org/bytes/0.1.0
npm http GET https://registry.npmjs.org/formidable/1.0.11
npm http GET https://registry.npmjs.org/qs/0.5.1
npm http GET https://registry.npmjs.org/bson/0.1.5
C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\Microsoft.CppBuild.targets(29
7,5): warning MSB8003: Could not find WindowsSDKDir variable from the registry.
  TargetFrameworkVersion or PlatformToolset may be set to an invalid version nu
mber. [D:\Dropbox\Projekte\RZ\Finance-Man-GUI\node_modules\bcrypt\build\bcrypt_
lib.vcxproj]
  blowfish.cc
  bcrypt.cc
  bcrypt_node.cc
..\src\bcrypt.cc(232): warning C4267: '=' : conversion from 'size_t' to 'unsign
ed char', possible loss of data [D:\Dropbox\Projekte\RZ\Finance-Man-GUI\node_mo
dules\bcrypt\build\bcrypt_lib.vcxproj]
c:\users\timd\.node-gyp\0.8.18\deps\uv\include\ares.h(49): fatal error C1083: C
annot open include file: 'winsock2.h': No such file or directory [D:\Dropbox\Pr
ojekte\RZ\Finance-Man-GUI\node_modules\bcrypt\build\bcrypt_lib.vcxproj]
gyp ERR! build error
gyp ERR! stack Error: `C:\Windows\Microsoft.NET\Framework64\v4.0.30319\msbuild.e
xe` failed with exit code: 1
gyp ERR! stack     at ChildProcess.onExit (C:\Program Files\nodejs\node_modules\
npm\node_modules\node-gyp\lib\build.js:255:23)
gyp ERR! stack     at ChildProcess.EventEmitter.emit (events.js:99:17)
gyp ERR! stack     at Process._handle.onexit (child_process.js:678:10)
gyp ERR! System Windows_NT 6.1.7600
gyp ERR! command "node" "C:\\Program Files\\nodejs\\node_modules\\npm\\node_modu
les\\node-gyp\\bin\\node-gyp.js" "rebuild"
gyp ERR! cwd D:\Dropbox\Projekte\RZ\Finance-Man-GUI\node_modules\bcrypt
gyp ERR! node -v v0.8.18
gyp ERR! node-gyp -v v0.8.2
gyp ERR! not ok
npm ERR! [email protected] install: `node-gyp rebuild`
npm ERR! `cmd "/c" "node-gyp rebuild"` failed with 1
npm ERR!
npm ERR! Failed at the [email protected] install script.
npm ERR! This is most likely a problem with the bcrypt package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     node-gyp rebuild
npm ERR! You can get their info via:
npm ERR!     npm owner ls bcrypt
npm ERR! There is likely additional logging output above.

npm ERR! System Windows_NT 6.1.7600
npm ERR! command "C:\\Program Files\\nodejs\\\\node.exe" "C:\\Program Files\\nod
ejs\\node_modules\\npm\\bin\\npm-cli.js" "install"
npm ERR! cwd D:\Dropbox\Projekte\RZ\Finance-Man-GUI
npm ERR! node -v v0.8.18
npm ERR! npm -v 1.2.2
npm ERR! code ELIFECYCLE
npm http 304 https://registry.npmjs.org/crc/0.2.0
npm http 304 https://registry.npmjs.org/qs/0.5.1
npm http 304 https://registry.npmjs.org/pause/0.0.1
npm http 304 https://registry.npmjs.org/bson/0.1.5
npm http 304 https://registry.npmjs.org/formidable/1.0.11
npm http 304 https://registry.npmjs.org/bytes/0.1.0

> [email protected] install D:\Dropbox\Projekte\RZ\Finance-Man-GUI\node_modules\mongoos
e\node_modules\mongodb\node_modules\bson
> node install.js || (exit 0)

================================================================================

=                                                                              =

=  Attempting to build bson c++ extension                                      =

=   Windows: no build will be attempted as binaries are prepackaged            =

=   Unix: on failure the package will still install without the C++ extension  =

=                                                                              =

================================================================================

npm ERR!
npm ERR! Additional logging details can be found in:
npm ERR!     D:\Dropbox\Projekte\RZ\Finance-Man-GUI\npm-debug.log
npm ERR! not ok code 0

Mam już zainstalowany Python Path w następujący sposób:

%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;%SYSTEMROOT%\System32\WindowsPowerShell\v1.0\;C:\Program Files\nodejs\;E:\Program Files\Java\jdk1.6.0_38\bin;C:\Program Files (x86)\Heroku\bin;C:\Program Files (x86)\ruby-1.9.2\bin;C:\Program Files (x86)\git\bin;C:\Program Files (x86)\git\cmd;E:\Program Files (x86)\Heroku\bin;C:\mongodb-win32-x86_64-2.2.2\bin;E:\xampp\mysql\bin;E:\xampp\apache\bin;E:\Python27;C:\Program Files (x86)\Microsoft Visual Studio 8\VC\vcpackages;C:\Program Files\Microsoft Windows Performance Toolkit\;E:\Program Files (x86)\openssl-0.9.8k_X64\bin