I'm getting a JavaScript error "Error: Attribute only valid on v:image" on pages with VML. This seems to be a regression error as it was fixed in H.23.4. I've included a link below to an article detailing the issue. Unfortunately, their work around for old versions of H legacy code doesn't work with AppMeasurement.js. For now we are using the old H legacy js on pages with VML.
https://groups.google.com/forum/#!topic/cufon/3GYxTiCZF7A
