Hi, I am new to darwinbuild. Thank you very much for your great work on this. I am trying to build Tokend on MacOS 10.7 (Lion) Preview (build 11A459e) with Xcode 4.1 Preview (build 4B56d). My purpose is to get tokend for MacOS 10.7. I am using darwinbuild build 10J869, which is for 10.7 (thank you, Bill http://lists.macosforge.org/pipermail/darwinbuild-dev/2011-March/000649.html). I followed the instructions on the web to: 1. build & install darwinbuild 2. Darwinbuild –init 3. Darwinbuild Tokend 4. Also tried darwinbuild SmartCardServices Both 3 and 4 result in Xcode crash - /Developer/usr/bin/xcodebuild install -sdk SRCROOT=/Users/nao/workp4/smartcardservices/10J869/BuildRoot/SourceCache/Tokend/Tokend-40596 OBJROOT=/Users/nao/workp4/smartcardservices/10J869/BuildRoot/private/var/tmp/Tokend/Tokend-40596.obj SYMROOT=/Users/nao/workp4/smartcardservices/10J869/BuildRoot/private/var/tmp/Tokend/Tokend-40596.sym DSTROOT=/Users/nao/workp4/smartcardservices/10J869/BuildRoot/private/var/tmp/Tokend/Tokend-40596.root RC_ProjectName=Tokend RC_ProjectSourceVersion=40596 RC_ProjectNameAndSourceVersion=Tokend-40596 RC_ProjectBuildVersion=1 INSTALLED_PRODUCT_ASIDES=YES MACOSX_DEPLOYMENT_TARGET=10.6 NEXT_ROOT= RC_ARCHS=i386 x86_64 RC_CFLAGS=-pipe -arch i386 -arch x86_64 RC_JASPER=YES RC_NONARCH_CFLAGS=-pipe RC_OS=macos RC_PRIVATE=/private RC_RELEASE=SnowLeopard RC_TARGET_CONFIG=MacOSX RC_XBS=YES RC_i386=YES RC_x86_64=YES SEPARATE_STRIP=YES UNAME_RELEASE=10.0 UNAME_SYSNAME=Darwin ** INTERNAL ERROR: Uncaught exception ** Exception: -[__NSCFDictionary setObject:forKey:]: attempt to insert nil key Stack: 0 0x00007fff8a4e8cfa __exceptionPreprocess (in CoreFoundation) 1 0x00007fff87bbd9ea objc_exception_throw (in libobjc.A.dylib) 2 0x00007fff8a4e8b4a +[NSException raise:format:arguments:] (in CoreFoundatio … I have attached both logs to this e-mail. This exception seems to be seen by many users unrelated to darwinbuild, but there doesn't seem to be a common known solution. In another thread, Bill mentioned he has not tried Xcode 4. I am wondering how I should tackle this. A. Use Xcode 3.* instead of 4.1. (Could you advise which 3.* I should use?) B. Use a different build than 10J869 (Could you advise which build I should use?) ... Or some other approach? Any advice shall be appreciated. With best regards, Nao