Hi, I figured out I should drop a note about the recent changes in trunk. MacRuby will now build 64-bit by default on Intel machines, 2-way fat (for both i386 and x86_64). It means that if you are fortunate to run an Intel 64-bit machine, macruby will run in 64-bit by default. On PPC, MacRuby will only build for 32-bit, regardless if you run ppc or ppc64. In the case of MacRuby Xcode apps, you will have to modify the application's Xcode project to build for 64-bit. The templates and the samples have been modified to always build 64- bit by default. In the case of a HotCocoa app, in theory a new "macrake" should rebuild the .app bundle for 64-bit. If you update from an old trunk revision, you might want to clean all objects first, or even better, start with a fresh clean repository copy. Let me know if have troubles building/using trunk. On a separate note, there is now a CoreData application template that has graciously been contributed by Johannes Fahrenkrug! Laurent