I have the same issue that is mentioned here: Enterprise App Update Distribution on iOS 8
I'm not able to install the App on one of my iOS 8 devices and the log prints the following error:
LoadExternalDownloadManifestOperation: Ignore manifest download, already have bundleID: com.mycom.MyApp
The fix suggested says to change the bundle-identifier of the plist in the manifest. If I'm using Xcode Server on Yosemite, where is the plist file located I need to change?
Xcode Server OTA Installation Screen: