Hi all, Recently I started working with Cocoa Bindings, the Control layer in OSX-Panther, which allows getting rid of most controller-glue-code; a joy indeed! However, it doesn't seem to work with RubyCocoa/Ruby 1.8 ... when I run my dummy-app, I get the following message: /Users/hvs/tmp/bibliotecha/build/bibliotecha.app/Contents/Resources/rb_main.rb:19:in `NSApplicationMain': NSApplicationMain - NSUnknownKeyException - [<Book 0x4f2540> valueForUndefinedKey:]: this class is not key value coding-compliant for the key title. (OSX::OCException) from /Users/hvs/tmp/bibliotecha/build/bibliotecha.app/Contents/Resources/rb_main.rb:19 Am I missing something? thx, Harry