Issue with building iOS on AppseleratorStudio [ERROR]: Invalid "--device-id" value ""

The simplest fix is to go to "Debug Configurations..." and delete the config for your project. Studio will automatically rebuild it or maybe ask you for which Provisioning Profile you want to use.

While Goltsev Eugene works it's a bit much, as creating a new project makes you loose all history, analytics, push, etc. on appcelerator platform.

Try adding --device-id 814afcb29c793aea10b182b53f3f629b73ed1a39 to your titanium build command.