built an app with almost-latest-juice, compatibility set to 10.5 and tested it on 10.5.8.
got this error when launching the program:
dyld: Symbol not found: __NSConcreteGlobalBlock
Referenced from: /Applications/..../MyApp.app/Contents/MacOS/MyApp
Expected in: /usr/lib/libSystem.B.dylib
Rather annoyingly phpBB doesn’t allow you to search for strings longer than 14 chars so searching for NSConcreteGlobalBlock doesn’t work. Damn you phpBB!