"Not Writable! - Root.plist" greyed out when building

Was having a play with settings bundles just before in xcode 3.2.3 (sdk 4.0.1), but then I deleted the settings.bundle folder and 'also moved to trash'ed.

Now every time I build I have a dialogue "Save before building?" and the root.plist file there, but gr开发者_高级运维eyed out and unselectable.

I checked the directory where it was claiming to be, but nothing there.

Its getting annoying. Any ideas?

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I added a bundle again and deleted it... fixed the bug