Unable to push couchapp with node.couchapp.js

I'm trying to push a simple couchapp on windows, but I'm dooing sth. wrong.

First I'm installing couchapp using npm:

D:\test>npm -g install couchapp
D:\test>npm install couchapp

I know that there are two diffrent couchapps, but I'm shurely using the node couchapp:

D:\test>couchapp
The "sys" module is now called "util". It should have a similar interface.
couchapp -- utility for creating couchapps

Usage:
  couchapp <command> app.js http://localhost:5984/dbname

Commands:
  push   : Push app once to server.
  sync   : Push app then watch local files for changes.
  boiler : Create a boiler project.

Now I create a couchapp:

couchapp boiler

This creates a app.js and a attachments folder containing a simple couchapp. Now i want to push it to the couchdb:

couchapp push app.js http://localhost:5984/test

This results in the following error:

node.js:201
        throw e; // process.nextTick error, or 'error' event on first tick
              ^
Error: Cannot find module 'app.js'
    at Function._resolveFilename (module.js:332:11)
    at Function._load (module.js:279:25)
    at Module.require (module.js:354:17)
    at require (module.js:370:17)
    at Object.<anonymous> (D:\test\node_modules\couchapp\bin.js:78:24)
    at Module._compile (module.js:441:26)
    at Object..js (module.js:459:10)
    at Module.load (module.js:348:31)
    at Function._load (module.js:308:12)
    at Array.0 (module.js:479:10)

What am I dooing wrong? Please help me