When you first run the AUCP the AUCP loader will check for updates to the AUCP. It looks like the pic below
If there are any updates to the AUCP they will be applied while this window is up. Once the loader is done, it will the run the AUCP. The AUCP looks like the pic below
If you get this far, then the AUCP is fully installed and functioning correctly. There are times when the update will hang and you will need to close out of the AUCP and rerun it. The AUCP will start up at the file that it was hung on so you will not have to start over.