DropboxClientsManager authorizeFromController not doing anything

Okay.  The Example app works fine.  

I deleted the sdk's from my apps and re-downloaded.  They update fine now.

I read the release notes, though -- you dropped support for iOS 8?  So iOS9+ only?  Too soon!  I'm only just now dropping 7.

I set my cartfile to 3.0.11 which looks to be the one before you dropped iOS 8 support.   Should that work, or have I got to drop 8 to continue using Dropbox?

But my god there are sure a lot of changes since I was working on this just a couple of months ago.   

Here's one error I see a few times:  "instance method -progress not found".   This is in case like this one, where I was downloading a file:

    [[[[DBClientsManager authorizedClient].filesRoutes downloadUrl:remotePath overwrite:NO destination: destURL]
      setResponseBlock:^(DBFILESFileMetadata *result,  DBFILESDownloadError *downloaderror, DBRequestError *error, NSURL *destination) {
          if (result) {
              NSLog(@"%@\n", result);
              [brainpan loadedDropboxFile];
              
          } else {
              [brainpan loadDropboxFileFailed:(int)downloaderror.tag];
          }
      }] progress:^(int64_t bytesUploaded, int64_t totalBytesUploaded, int64_t totalBytesExpectedToUploaded) {
          NSLog(@"\n%lld\n%lld\n%lld\n", bytesUploaded, totalBytesUploaded, totalBytesExpectedToUploaded);
      }];

If I look at the API documentation, the example for downloading a file looks a lot like mine:

http://dropbox.github.io/dropbox-sdk-obj-c/api-docs/latest/index.html#download-style-request

[[[client.filesRoutes downloadUrl:@"/test/path/in/Dropbox/account" overwrite:YES destination:outputUrl]
    setResponseBlock:^(DBFILESFileMetadata *result, DBFILESDownloadError *routeError, DBRequestError *networkError,
                       NSURL *destination) {
      if (result) {
        NSLog(@"%@\n", result);
        NSData *data = [[NSFileManager defaultManager] contentsAtPath:[destination path]];
        NSString *dataStr = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
        NSLog(@"%@\n", dataStr);
      } else {
        NSLog(@"%@\n%@\n", routeError, networkError);
      }
    }] progress:^(int64_t bytesDownloaded, int64_t totalBytesDownloaded, int64_t totalBytesExpectedToDownload) {
  NSLog(@"%lld\n%lld\n%lld\n", bytesDownloaded, totalBytesDownloaded, totalBytesExpectedToDownload);
}];

Can you tell what I am doing wrong from what I've listed here?

Also, has the process for getting and saving OAuth2Tokens from OAuth1Tokens changed?  That function you gave me, "

getAndSaveOAuth2TokensFromRetrievedOAuth1Tokens" has some errors, and in the documentation it looks like there is a whole new way of doing this: https://github.com/dropbox/dropbox-sdk-obj-c#migrating-oauth-tokens-from-earlier-sdks

Man this is kind of overwhelming, did I just pick the absolute wrong time to upgrade Dropbox back in January, like a week before you guys decided to change everything in the SDK?

Thanks

Bob