I had tried to download the SE iPad app after upgrading from iOS 7 to 8. However, nothing happens when I click the download link. For those unfamiliar with the SE app, it's still in beta, so it has to be downloaded via web. It is accessed via an itms-services:// URL. (It's a bit of a secret exactly what it is.)
It worked just fine before the update. I never had 8.0 or 8.0.1.
Is there any known info on not being able to download apps from the web?
My bug report on Meta.SE is here: Unable to update app on iOS 8.0.2
Best Answer
This appears to be a bug with enterprise distribution in iOS 8. If you updated to iOS 8 and had an app with the same bundle identifier installed (i.e. the same app) then you'll be unable to install the app.
A workaround is to change the bundle identifier in the distribution plist. This doesn't require the actual bundle identifier of the app to change, just the distribution plist. Alternatively, you can wait until Apple fixes it.
SE have used the workaround to fix the iOS app beta distribution, as discussed in chat and on the aforementioned meta question.