First of all, thank you very much for taking the time to write this piece of code, it really would save me a lot of time and nerves, if I get it running, but unfortunately I ran into something I can't seem to resolve myself. I hope you can help me out, or if you got some example code somewhere, that would also be very appreciated.

To my problem: I initiate my instance in my -applicationDidFinishLaunching: method:

OROpenSubtitleDownloader *downloader = [[OROpenSubtitleDownloader alloc] initWithUserAgent:@"OS Test User Agent"];
downloader.delegate = self;

and then in the delegate callback I try to search for downloads like that:

NSLog(@"#1");
[downloader searchForSubtitlesWithHash:hash andFilesize:fileSize :^(NSArray *subs) { NSLog(@"%@", subs); }];
NSLog(@"#2");

and it runs fine - except that it doesn't log any subtitles - until after NSLog(@"#2"); but when it exits the method it crashes somewhere, and just shows some assembly code.
I use Mac OS X 10.7.5 and Xcode 4.6.3 and my project doesn't use ARC but I set the -fobjc-arc flag for OROpenSubtitleDownloader.m.
Thanks in advance for any hints or if it's a bug, if you could just point me to the right direction?