Rails - Sep 2009 - markdown call prompts "uninitialized constant ActionView::Helpers::TextHelper::Markdown" in upgraded application

Hey All,

I''m attempting to upgrade my app from rails 2.0.2 to 2.3.3.  One bit
that''s failing is this call here (in /views/projects/show.html.erb)

  <%= markdown(@project.description) %>

That earns me a:

  uninitialized constant ActionView::Helpers::TextHelper::Markdown

On that line.

I''m on a rebuilt machine (windows xp, ruby 1.8.6) so I thought it was a
missing bluecloth gem, but I think I fixed that (bc works in irb at least).

What would be good to diagnose & fix this problem?

Many thanks!

-Roy

GHC Confidentiality Statement

This message and any attached files might contain confidential information
protected by federal and state law. The information is intended only for the use
of the individual(s) or entities originally named as addressees. The improper
disclosure of such information may be subject to civil or criminal penalties. If
this message reached you in error, please contact the sender and destroy this
message. Disclosing, copying, forwarding, or distributing the information by
unauthorized individuals or entities is strictly prohibited by law.