There are a couple of potential solutions to this issue.
1) you could remove the meta tag from one or both of the plugins you are using and have it on the page itself.
2) you could remove the ->Header reference for the plugins and instead add the meta data, script, and css individually using bindings.
Do either of these solutions work for you? Without seeing the exact structure of the plugins you are using it is difficult to suggest which method I would actually use.