Solved my problem by replacing plugin. Not sure what exactly was the issue with WP-embed any document not working anymore with Google viewer. Switched PDF viewers to PDF-embedder plugin and this one is working just fine. So problem closed for me anyway.
Is there a way to delete the [itemprop=”image”] from the automatic plugin results, or alternatively is there a way to put the missing meta itemscope into the automatic code, so the Markup Validation Service W3C errors can be overcome? From what was said in previous post-these validation errors might be out of date- So are you saying that the itemscope is no longer needed to properly build the meta tags?
