iOS Enterprise OTA distribution Unable to Download Application

Question

I created an iOS app and want to distribute it Over-The-Air. I followed this guide:

http://help.apple.com/iosdeployment-apps/mac/1.1/?lang=en-us#app43ad77ea

Answer 1

Answering my own question:

The problem was that one of the thumbnails did not have the correct path set in the manifest.plist - so not only the ipa needs the correct path, but also the temporary download icons, otherwise the installation will fail with the mentioned error message.