gistfile1.txt

tell application "Xcode"
	set theProject to first project
	set theTarget to first target of theProject
	set theBuildPhase to compile sources phase of theTarget
	tell first group of theProject
		set theFileRef to make new file reference with properties {full path:"/Users/fejj/Projects/XcodeTest/XcodeTest/MyViewController.h", name:"MyViewController.h", path:"XcodeTest/MyViewController.h", path type:group relative}
		--add theFileRef to theProject
	end tell
	tell theBuildPhase to make new build file with properties {build phase:theBuildPhase, name:"MyViewController.h", file reference:theFileRef, target:theTarget, project:theProject}
end tell


error: "missing value"

if I use the --add instead of the "tellTheBuildPhase..." line, I get:

error "Xcode got an error: file reference id \"251AD34D14325907006E300F\" of Xcode 3 group id \"251AD32C14324645006E300F\" of project \"XcodeTest\" of workspace document \"XcodeTest.xcodeproj/project.xcworkspace\" doesn’t understand the add message." number -1708 from file reference id "251AD34D14325907006E300F" of Xcode 3 group id "251AD32C14324645006E300F" of project "XcodeTest" of workspace document "XcodeTest.xcodeproj/project.xcworkspace"