Updated to SDK 6.4.2 and I'm now getting the warning: "No supported languages are defined."

Language is set to English:

        <!--
            Use "Monkey C: Edit Languages" from the Visual Studio Code command
            palette to edit your compatible language list.
        -->
        <iq:languages>
            <iq:language>eng</iq:language>
        </iq:languages>
Example error:
WARNING: descentmk2: No supported languages are defined. Language-specific resources will be ignored unless language support is added to the manifest file.
BUILD SUCCESSFUL
* Terminal will be reused by tasks, press any key to close it.
A minor thing but annoying. 
I've even added a resources-eng folder.
Paul