_breadcrumbs.html.erb error

[robertdolca]

Showing /var/lib/gems/1.9.1/gems/twitter-bootstrap-rails-2.1.6/app/views/twitter-bootstrap/_breadcrumbs.html.erb where line #11 raised:

can't convert Symbol into Integer

[yevgenko]

I also have seen this error when removed Gemfile.lock, however it broke the app.
According to Gemfile.lock it must be twitter-bootstrap-rails-2.0.5, but your is twitter-bootstrap-rails-2.1.6