App crashes.

[nikitabelosludtcev]

-(NSData )sendSynchronousRequest:(NSURLRequest *)request returningResponse:(NSURLResponse *)response error:(NSError **)error { // Start network activity indicator [DKNetworkActivity begin];

//***** crashes on this method ******// NSData * data = [NSURLConnection sendSynchronousRequest:request returningResponse:response timeout:20.0 error:error];

// End network activity
[DKNetworkActivity end];
return data;

}

[nikitabelosludtcev]

The trouble was there:

dispatch_release(sema);

It doesn't work on ARC.