[DerekM]

If the S5 plugin still works for you, then there's nothing you need to do. If it doesn't work, or you want to stop that warning from being logged, you need to edit the info.plist file (S5.ooxsl/Contents/Info.plist).

Open that file in a text editor and enter you'll see this at the top:

<dict>
	<key>CFBundleDevelopmentRegion</key>
	<string>English</string>
	<key>CFBundleExecutable</key>
	<string>S5</string>

What you need to do is enter the CFBundleIdentifier key. So something like:

	<key>CFBundleIdentifier</key>
	<string>com.s5.OmniOutliner.s5</string>

Place it at the same level as the other CFBundle keys.