Hi,

I'm seeing some breakage with Erubis 2.6.4 against Rails 2.2.2:

You have a nil object when you didn't expect it!
You might have expected an instance of Array.
The error occurred while evaluating nil.<<

-- snip --

/opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_view/
helpers/text_helper.rb:42:in `concat'
/opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_view/
helpers/form_tag_helper.rb:461:in `form_tag_in_block'
/opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_view/
helpers/form_tag_helper.rb:39:in `form_tag'
app/views/sessions/new.html.erb:28

I'm looking into this further.

Regards,

Rob