I'm using Xcode 7.2, iOS 9.2 for iPhone 6. When I try to download app from Test-Flight it download all the way and show me this error message:
"Unable to Download Application" Retry (or) Done
Some of my beta-testers (internal) also had same error message but not all. It was working a couple of days ago and I'm not changing anything except bug fixes in my code. Any help would be appreciated.
This looks like a provisioning issue. Double check your provisioning profiles. Sometimes Xcode suggests provisioning profile fixes that can actually screw up your profiles. I tend to never use Xcode's 'Fix issue' for this reason!