ruby bundle check

Chloe@dumbopc /cygdrive/c/Sites
$ bundle platform
Could not locate Gemfile

Chloe@dumbopc /cygdrive/c/Sites
$ bundle check
Could not locate Gemfile

Chloe@dumbopc /cygdrive/c/Sites
$ cd testapp/

Chloe@dumbopc /cygdrive/c/Sites/testapp
$ bundle platform
Your platform is: i386-cygwin

Your app has gems that work on these platforms:
* ruby

Your Gemfile does not specify a Ruby version requirement.

Chloe@dumbopc /cygdrive/c/Sites/testapp
$ bundle check
Unfortunately, a fatal error has occurred. Please see the Bundler
troubleshooting documentation at http://bit.ly/bundler-issues. Thanks!
/usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/friendly_errors.rb:32: stack level too deep (SystemStackError)

Chloe@dumbopc /cygdrive/c/Sites/testapp
$ gem env
RubyGems Environment:
  - RUBYGEMS VERSION: 1.8.24
  - RUBY VERSION: 1.9.3 (2013-01-15 patchlevel 374) [i386-cygwin]
  - INSTALLATION DIRECTORY: /usr/lib/ruby/gems/1.9.1
  - RUBY EXECUTABLE: /usr/bin/ruby.exe
  - EXECUTABLE DIRECTORY: /usr/bin
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86-cygwin
  - GEM PATHS:
     - /usr/lib/ruby/gems/1.9.1
     - /home/Chloe/.gem/ruby/1.9.1
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :benchmark => false
     - :backtrace => false
     - :bulk_threshold => 1000
     - "install" => "--no-rdoc --no-ri"
     - "update" => "--no-rdoc --no-ri"
  - REMOTE SOURCES:
     - http://rubygems.org/

Chloe@dumbopc /cygdrive/c/Sites/testapp
$