This error is generated during execution of the Config Wizard after attempting to install NPM 11.5.3 from NPM 11.5.2, or when going from SAM 6.2.2 to SAM 6.2.3.
I also received the exact same error when attempting to apply OrionPlatform-v2015.1.3-MSP-HotFix1.
Has anyone else seen this particular error during upgrade of any of these components?