npm is no ok

gistfile1.bat

C:\Users\Sean\Dropbox\nodejs\node_modules\sqlite3\build\deps\sqlite3\sqlite3.vcxproj(1,682): error MSB4019: The imported project "C:\Microsoft.Cpp.Default.props" was not found. Confirm that the path in the <Import> declaration is correct, and that the file exists on disk.
ERR! Error: `C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe` failed with exit code: 1
    at ChildProcess.onExit (C:\Users\Sean\Dropbox\nodejs\node_modules\npm\node_modules\node-gyp\lib\build.js:209:23)
    at ChildProcess.emit (events.js:70:17)
    at maybeExit (child_process.js:362:16)
    at Process.onexit (child_process.js:398:5)
ERR! not ok

npm ERR! sqlite3@2.1.3 install: `node-gyp rebuild`
npm ERR! `cmd "/c" "node-gyp rebuild"` failed with 1
npm ERR!
npm ERR! Failed at the sqlite3@2.1.3 install script.
npm ERR! This is most likely a problem with the sqlite3 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 sqlite3
npm ERR! There is likely additional logging output above.
npm ERR!
npm ERR! System Windows_NT 6.1.7601
npm ERR! command "C:\\Users\\Sean\\Dropbox\\nodejs\\\\node.exe" "C:\\Users\\Sean\\Dropbox\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "install" "sqlite3"
npm ERR! cwd C:\Users\Sean\Dropbox\nodejs
npm ERR! node -v v0.6.18
npm ERR! npm -v 1.1.21
npm ERR! code ELIFECYCLE
npm ERR! message sqlite3@2.1.3 install: `node-gyp rebuild`
npm ERR! message `cmd "/c" "node-gyp rebuild"` failed with 1
npm ERR! errno {}
npm ERR!
npm ERR! Additional logging details can be found in:
npm ERR!     C:\Users\Sean\Dropbox\nodejs\npm-debug.log
npm not ok