Can't install apps from TestFlight after updating XCode to 7.0.1

Question

• Previous TestFlight builds worked fine and I could download them fine
• I upgraded to the latest version of XCode from the App store
• I archived and uploaded a build just fine
• After it was done with beta review, I tried to download it from TestFlight and it failed to download
• I used configurator to inspect the error and it came up with Failed to verify code signature of... and The executable was signed with invalid entitlements .
• I checked all my provisioning profiles and they are correct
• I do have the beta-reports-active = 1 entitlement when i look at the summary of the archive
• When the build is uploaded to iTunes connect and processing, I see this warning: Some builds are missing the beta entitlement, or were uploaded with a beta version of Xcode, and cannot be tested.
• What is weird though is my app passes beta review.

Any idea why this is happening?

Answer 1

Instead of using build number 1 I changed it to something like 6 . Eg 1.0.6 (6) . Also under Code Signing Identity I put IOS Developer for every entry and Provisioning Profile as Automatic . I no longer get the issue in the screenshot. Will see if it also lets me download the build, but need to wait for beta review.