wp-polls archive page problems

Hey there – I just installed wp-polls (the latest version for 2.1), but it’s not really working on the archive page.

I followed the instructions to add an archive page, but no matter what I do it gives the “Please choose a valid poll answer” error when you try to vote. It works in the sidebar as far as I can tell – just not in the archive. Any ideas?

The archive page is here: https://thegate.ca/blog/pollsarchive/

Cheers,
Andrew