stencyl remote build error

Hi, I am Thai high school student and I use Stencyl to create game for my school project.
However when I send my game to Stencyl mac server to build it (remotebuild) I got a massage tell me that my game can't build. So anyone help me pleaseeee

This is my error(from massage that I got)

Build settings from command line:
    CODE_SIGN_IDENTITY =
    SDKROOT = iphoneos5.1

=== BUILD NATIVE TARGET AppScaffold OF PROJECT AppScaffold WITH CONFIGURATION Release ===
Check dependencies
CodeSign error: code signing is required for product type 'Application' in SDK 'iOS 5.1' 

I'm having the same problem on Mac 10.9. Mine is like this:

[LOG] Finished building for iOS (or errored out): 1
[LOG] CodeSign error: code signing is required for product type 'Application' in SDK 'iOS 7.0'
[LOG] ** BUILD FAILED **
[LOG] The following build commands failed:
[LOG]    Check dependencies
[LOG] (1 failure)