When upgrading an old ruby on rails 1.2 application to rails 2.2.2, I ran into a frustrating, somewhat un-google-able error, so I’m writing down the solution here.
If you get a render with invalid options error, the solution is to uninstall the textmate footnotes plugin, and use the rails-footnotes plugin instead.
Thanks to David Zohrob’s blog post for helping me figure this out.

