TypeError: argument of type 'NoneType' is not iterable

I got this error and the build process exited with code 1.

The log file is:

!SESSION 2013-05-29 12:53:24.281 -----------------------------------------------
eclipse.buildId=3.1.0.201304151600
java.version=1.6.0_45
java.vendor=Apple Inc.
BootLoader constants: OS=macosx, ARCH=x86, WS=cocoa, NL=pt_BR
Framework arguments: -keyring /Users/Usuario/.eclipse_keyring -showlocation
Command-line arguments: -os macosx -ws cocoa -arch x86 -keyring /Users/Usuario/.eclipse_keyring -consoleLog -showlocation

!ENTRY com.appcelerator.titanium.mobile 4 0 2013-05-29 12:56:09.937
!MESSAGE (Build 3.1.0.201304151600) [ERROR] com.appcelerator.titanium.mobile/debug/dashboard Unknown SDK tizen

!ENTRY com.appcelerator.titanium.mobile 4 0 2013-05-29 12:56:09.957
!MESSAGE (Build 3.1.0.201304151600) [ERROR] com.appcelerator.titanium.mobile/debug/dashboard Unknown SDK mobileweb

!ENTRY com.appcelerator.titanium.mobile 4 0 2013-05-29 16:26:56.464
!MESSAGE (Build 3.1.0.201304151600) [ERROR] com.appcelerator.titanium.mobile/debug/dashboard Unknown SDK tizen

!ENTRY com.appcelerator.titanium.mobile 4 0 2013-05-29 16:26:56.486
!MESSAGE (Build 3.1.0.201304151600) [ERROR] com.appcelerator.titanium.mobile/debug/dashboard Unknown SDK mobileweb

!ENTRY org.eclipse.osgi 2 1 2013-05-29 16:29:56.582
!MESSAGE NLS missing message: HttpServerSettingsTab_Title in: com.aptana.js.debug.ui.internal.launchConfigurations.messages

!ENTRY org.eclipse.osgi 2 1 2013-05-29 16:30:05.340
!MESSAGE NLS missing message: IOSPackagerLaunchConfigurationDelegate_copy_app_error in: com.appcelerator.titanium.mobile.iphone.launching.messages

!ENTRY org.eclipse.osgi 2 1 2013-05-29 16:30:05.340
!MESSAGE NLS missing message: IOSPackagerLaunchConfigurationDelegate_copy_ipa_error in: com.appcelerator.titanium.mobile.iphone.launching.messages

thanks