For Monday's release, the listed bugs should be fixed. I'll try to provide a new list of ongoing bugs.

Keep in mind that if you use the same mobile provision files for different apps, you can install only one of those apps on a device at a time. That's usually fine for test apps, but it might throw you off if you use the mobile provision file of an app that's in the store. Your test app will replace the previous version. I created a few App IDs and mobile provision files for testing purposes.

Are you sure the UDID is correct? Some third-party tools provide the wrong UDID. Double-check the UDID in iTunes.

After you do the third-to-last step (obtain the signed .ipa file), can you load that .ipa file onto a device? (Connect your device. In Xcode, choose Window > Devices, and drag the signed .ipa file into apps area of the selected device.)My guess is that when you do the second-to-last step (refreshing the mobile provision file in Xcode), you're un-signing the app.