Crashlytics with iOS 9 Unable to Download App

Question

I am getting the following error:

Unable to Download: APP_NAME could not be installed at this time [Done/Retry options]

I am on

Answer 1

Found this answer on Crashlytics' forum: https://twittercommunity.com/t/download-problem-detected/52772

Basically you need to delete existing app from App Store before trying to install the beta build