Apps built with Xcode 6 don't run on iOS8

Question

I recently updated to Xcode 6 beta 3.

When I run my app in Xcode 6 beta 2 it runs fine. When I run my app in beta 3 on an iOS7 device it runs fine.

However, when I run using beta 3 and iOS8 beta 3, it builds, claims it is running (in the toolbar feedback); and – about 5 seconds after that – it shows "finished running" in the toolbar. The app isn't installed on the phone after all this. There isn't anything logged in the console. Everything from Xcode's side appears fine.

I did manage to install the app the first two times I tried, but never again.

I used a work around invalid virtual filesystem overlay file when the error mentioned in link popped up... but I'm not sure how that is related to this.

I reset everything I can think of, and reinstalled iOS8 on the phone. Nothing seems to fix this problem. Has anyone else run into this?

Answer 1

Seems fixed in later xCode versions.