Calabash在iOS控制台中找不到plist

我正在尝试使用start_test_server_in_BACkground在calabash-ios控制台中启动测试服务器,但是收到错误,它无法找到目标的plist.我不确定我在这里做错了什么,我肯定会在内置的.app产品中看到Info.plist文件.

irb(main):001:0> start_test_server_in_BACkground
RuntimeError: plist 'com.desk.desk/Info.plist' does not exist - Could not read
    from /Users/jforrest/.rvm/gems/ruby-2.1.2/gems/run_loop-1.2.0/lib/run_loop/plisT_Buddy.rb:126:in `build_plist_cmd'
    from /Users/jforrest/.rvm/gems/ruby-2.1.2/gems/run_loop-1.2.0/lib/run_loop/plisT_Buddy.rb:20:in `plist_read'
    from /Users/jforrest/.rvm/gems/ruby-2.1.2/gems/run_loop-1.2.0/lib/run_loop/lipo.rb:114:in `binary_path'
    from /Users/jforrest/.rvm/gems/ruby-2.1.2/gems/run_loop-1.2.0/lib/run_loop/lipo.rb:84:in `info'
    from /Users/jforrest/.rvm/gems/ruby-2.1.2/gems/run_loop-1.2.0/lib/run_loop/lipo.rb:65:in `expect_compatible_arch'
    from /Users/jforrest/.rvm/gems/ruby-2.1.2/gems/run_loop-1.2.0/lib/run_loop/core.rb:119:in `expect_compatible_simulator_architecture'
    from /Users/jforrest/.rvm/gems/ruby-2.1.2/gems/run_loop-1.2.0/lib/run_loop/core.rb:214:in `run_with_options'
    from /Users/jforrest/.rvm/gems/ruby-2.1.2/gems/run_loop-1.2.0/lib/run_loop/core.rb:793:in `run'
    from /Users/jforrest/.rvm/gems/ruby-2.1.2/gems/calabash-cucumber-0.12.0/lib/calabash-cucumber/launcher.rb:737:in `block in new_run_loop'
    from /Users/jforrest/.rvm/gems/ruby-2.1.2/gems/calabash-cucumber-0.12.0/lib/calabash-cucumber/launcher.rb:735:in `times'
    from /Users/jforrest/.rvm/gems/ruby-2.1.2/gems/calabash-cucumber-0.12.0/lib/calabash-cucumber/launcher.rb:735:in `new_run_loop'
    from /Users/jforrest/.rvm/gems/ruby-2.1.2/gems/calabash-cucumber-0.12.0/lib/calabash-cucumber/launcher.rb:610:in `relaunch'
    from /Users/jforrest/.rvm/gems/ruby-2.1.2/gems/calabash-cucumber-0.12.0/lib/calabash-cucumber/core.rb:849:in `start_test_server_in_BACkground'
    from (irb):1
    from /Users/jforrest/.rvm/rubies/ruby-2.1.2/bin/irb:11:in `<main>'

我的环境

irb(main):003:0> server_version['version']
"0.12.0"

calabash-ios version
0.12.0

xcodebuild -version
Xcode 6.1.1
Build version 6A2008a

xcode-SELEct --print-path
/Applications/Xcode.app/Contents/Developer