I've been using Phonegap Build for developing hybrid apps for some time. But after August 3rd, the QA reported one app we're currently developing stopped working on iPohne 4S running iOS 7.1.2. Whenever they try to install or upgrade the app using iTunes they get the message on the title.
I've downgraded the cli version to the one previously working fine using
<preference name="phonegap-version" value="cli-6.2.0" />
<preference name="deployment-target" value="7.0" />
After reaching the Phonegap Build team on their community forum and twitter, looks like it's an unsolved bug with
cli 6.0.0 at least and newer. After making a rollback to
cli 5.2.0 the app started working as expected. If anyone experiences a similar issue in the future with this or any other recent implemented cli version, that should do the trick.