Since Google Documents opened its new editor to public, there’s a lot of bugs founded especially in the API (the ports to allow third party applications to connect Google Docs servers).
We investigate the problem and found Google Docs’ new editor can’t export documents correctly to external applications when you use new document interface.
The detail of the problem is written below, in the issue tracker of Google Docs API.
You can avoid the problem if you changed the user interface of Google Docs to the old one (Please be aware the documents you have already created with new interface are still unable to export).
To change the interface of Google Docs, go “Editing” tab on “Document Settings” and remove the check of “Create new text documents using the latest version of the document editor”.
Logout and re-login is recommended to apply the change.
We keep tracking of the problem.
We apologize for your inconvenience.