Segmentation fault: 11 building AWS S3 iOS Module

AmazonS3Client *s3 = [[[AmazonS3Client alloc] initWithAccessKey:ACCESS_KEY_ID withSecretKey:SECRET_KEY] autorelease];
    s3.endpoint = [AmazonEndpoints s3Endpoint:US_WEST_2];
 
    // Create the picture bucket.
    S3CreateBucketRequest *createBucketRequest = [[[S3CreateBucketRequest alloc] initWithName:@"snapz" andRegion:[S3Region USWest2]] autorelease];
    S3CreateBucketResponse *createBucketResponse = [s3 createBucket:createBucketRequest];
    if(createBucketResponse.error != nil)
    {
        NSLog(@"Error: %@", createBucketResponse.error);
    }

anyone have any ideas how this can be? my guess is may have something to do with multithreading but don't know how to go about debugging/fixing it.