ember-cli: Build Error: EISDIR, illegal operation on a directory

Hi all. I’m just starting with ember-cli, here’s what I get on Windows:

• npm install -g ember-cli
• ember new my-new-app2
• cd my-new-app2 && ember server

version: 0.0.40
EISDIR, illegal operation on a directory 'F:\SVN\Ember\my-new-app\tmp\remover-tmp_cache_dir-JlaWxDis.tmp\app.js'
Error: EISDIR, illegal operation on a directory 'F:\SVN\Ember\my-new-app\tmp\remover-tmp_cache_dir-JlaWxDis.tmp\app.js'
    at Object.fs.linkSync (fs.js:748:18)
    at linkAndOverwrite (F:\SVN\Ember\my-new-app\node_modules\ember-cli\node_modules\broccoli-file-remover\node_modules\broccoli-caching-writer\index.js:104:8)
    at linkRecursivelySync (F:\SVN\Ember\my-new-app\node_modules\ember-cli\node_modules\broccoli-file-remover\node_modules\broccoli-caching-writer\index.js:97:5)
    at linkRecursivelySync (F:\SVN\Ember\my-new-app\node_modules\ember-cli\node_modules\broccoli-file-remover\node_modules\broccoli-caching-writer\index.js:91:7)
    at F:\SVN\Ember\my-new-app\node_modules\ember-cli\node_modules\broccoli-file-remover\node_modules\broccoli-caching-writer\index.js:43:5
    at $$$internal$$tryCatch (F:\SVN\Ember\my-new-app\node_modules\ember-cli\node_modules\rsvp\dist\rsvp.js:470:16)
    at $$$internal$$invokeCallback (F:\SVN\Ember\my-new-app\node_modules\ember-cli\node_modules\rsvp\dist\rsvp.js:482:17)
    at $$$internal$$publish (F:\SVN\Ember\my-new-app\node_modules\ember-cli\node_modules\rsvp\dist\rsvp.js:453:11)
    at $$rsvp$asap$$flush (F:\SVN\Ember\my-new-app\node_modules\ember-cli\node_modules\rsvp\dist\rsvp.js:1531:9)
    at process._tickCallback (node.js:415:13)

The server running on port 4200 gives the same build error as above. I’m sorry if this is not a bug.

Windows 7 Pro node 0.10.24, 0.10.30 npm 1.3.21, 1.4.21 bower 1.3.8 ember-cli 0.0.40