[MacRuby-devel] calling Objective-C method with block parameter

Hello everyone, I'm attempting to call a method on an Objective-C object which takes a block as its parameter, but I'm not having much luck. I can happily create the object in Macruby and send the message with a Proc. The NSLog call within the Objective-C method body succeeds, but the 'block()' doesn't. Am I doing something obviously wrong here? (I'm using a nightly build from sometime last week). This is the Objective-C method: - (void)callBlock:(void (^)())block; { NSLog(@"block: %@", block); block(); } Here is the ruby code: b = TestBlock.new b.callBlock( Proc.new { puts "hello" } ) The output is as follows: block: #<Proc:0x2005c9b80> Program received signal: “EXC_BAD_ACCESS”.