Rails 2.2 sweeping error

Hello,

I posted this on the rails forum , but since I am running Jruby 1.1.6
figured i would post here. When using cache sweeping with rails 2.2 i
am
seeing the following error

A NoMethodError occurred in content#import:

undefined method controller_name' for nil:NilClass /usr/local/tomcat/webapps/myapp/WEB-INF/gems/gems/actionpack-2.2.2/lib/action_controller/caching/sweeping.rb:83:incallback’

We are running the acts_as_audited plugin which uses cache sweepers.
When
we set

config.action_controller.perform_caching to “false” this error goes
away.

Anyone have any ideas here?

Thanks
Adam