title: Internal Testflight build not installing hangs at 90%
body: <p><img src="https://i.stack.imgur.com/qKVVD.png" alt="enter image description here"></p>
  
  <p>My client is trying to install a build. Everytime, it hangs at 90%. Sometimes they leave it -- still hanging -- and check the app and see the version numbers as incremented.</p>
  
  <p>This time though, they've left it running there for 5 minutes and still the version hasn't updated.</p>
  
  <p>They removed the app and tried to install again and it's not installing, just hanging. How do I fix this?</p>