Hello, I've been having some issues with an iPhone 6 that I use for development.
Many times when I run an app from Xcode I will get an error from Xcode: "failed to receive handshake reply". The app will not load onto the phone and the app will not run when I get this error. After receiving the error, when I go to delete the app from my phone I hit the 'X' on the app icon and the phone crashes (goes to a blue screen and restarts). Then when I attempt to run the app on the phone again, I get a "process launch failed timed out trying to launch app" error from Xcode. I have found with this error, the app will load onto the phone but will not run and I cannot open the app to run it (it crashes immdeiately). However, if I delete the app from the phone and wait a few minutes, the app "magically" appears on the phone and I can run it through Xcode.
It is worth noting that this issue is not exclulsive to one phone, one computer or one app, it has happened on my personal phone as well as a company phone (both iPhone 6's), on my personal and work computers, and with apps I develop outside of the compay. I am using two very different computers for development. A mid-2014 iMac and a mid-2012 MacBook Pro. Both on the latest version of OS X Yosemite, both with the latest versions of Xcode. Because this issue occurs most often with the company phone, I have had that phone replaced once and restored the phone twice. I have also reinstalled Xcode once on the company iMac. Nothing is working.
I filed a bug with Apple back in February, the one response I received asked me to retrieve some crash/panic logs. I found that when the phone crashes no logs are output so I had nothing to send back to support. They has since not responded to this issue.
If anyone has experienced an issue similar to this let me know what I can do to fix this problem. Or let me know what I can do to escalate the bug report.