I have a Demonstration authored in Mathematica 10 I'm trying to upload. But the Authoring Area presents this disheartening message:
![Unsupported Mathematica version](/c/portal/getImageAttachment?filename=GSoi4nY.png&userId=20938)
I'm not particularly interested in downgrading to version 9, so is there any other way to export to a version 9 notebook?