Mac OS X Server 4.1, Xcode 6.3.1 "This version of Xcode cannot be used with this server"
I'm utterly confused.
The documentation for Mac OS X Server (from https://help.apple.com/serverapp/mac/4.0/#/apdA154F061-7CE4-4A58-843D-DC2CE3A1AE 8C ) shows that Xcode 6 or later (my emphasis). I have installed Mac OS X 10.10.3, Mac OS X Server 4.1, Xcode 6.3.1. I have no apps in the App Store's "Update" tab that need to be updated (just now double-checked). I clicked to the Xcode tab under "Services" in OS X Server, clicked the "Choose Xcode…" button, selected the version of Xcode from the Applications folder on the root HDD, and got the error message "This version of Xcode cannot be used with OS X Server."
So .... now what?
iMac, OS X Server, Base Mac OS X of 10.10.3