The working copy ” failed to commit files – Couldnt communicate with helper application

Turns out the “helper application” is in fact Git. For some reason Xcode 7 is eager to associate you (the committer) with a name and an email address.

To fix it, on the command line, type the following:

xcrun git config --global user.email you@yourdomain.com
xcrun git config --global user.name "Your Name Here"