Currently, you need to do the following to get an AU to work with a DS build:

1. Install base JRE
2. Remove first mapping entry from map file (leave the mapping that points to the NEXTVER au descriptor)
3. Edit the map file to point to a https location for the au descriptor
4. Create the override registry key, be sure to make it start with https
5. click on JCP update tab "Update now"

Steps 2 and 3 should not be necessary. The build should automatically put the https and only have one mapping entry. Also, AU will currently not work unless the files are signed. It should not be necessary for testing AU.