[darwinbuild-dev] Error: TargetConfig not defined

When attempting to build project apr on 10A432 using 10A432 or 10B504, I get the following in my build log: Error: TargetConfig not defined make[1]: *** [_targetconfig] Error 1 make: *** [install] Error 1 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++ BUILD TIME: 0h 0m 1s EXIT STATUS: 2 What does this mean? If I try to build project TargetConfig, then I get the following in my build log: make: xcrun: Command not found Error: TargetConfig not defined make: *** [_targetconfig] Error 1 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++ BUILD TIME: 0h 0m 2s EXIT STATUS: 2 This is all using the latest svn rev (575). Cheers, Tony