Error Duing Help Page Save

When I attempt to publish a help page, I get this error:

Connection lost. Saving has been disabled until you’re reconnected. We’re backing up this post in your browser, just in case.

And I can’t logout; I have to close the browser tab/window. When I return to the Dashboard, I can select my Help and the page I published is there. This happens with every page.

Any thoughts?

http://ww.wp.xz.cn/plugins/wp-help/