Just noticed the broken hosts app... looks very interesting. However, it does not appear in my app pull-down list, and when I click "launch app" from the app page, it simply takes me to the app with a search bar. The doc indicates there is a setup page, but nothing launched for me. Am I missing something? I installed it via the deployer, for a SHC, on 6.4.1.
Did you check if you have app.conf file in the app under local folder with following stanza? Also check if there is setup.xml file in default folder.
[install]
is_configured = 1
If yes, then just set to 0 and restart splunk. Next time when you click on app, it will open a setup page.