ActiveRecord::MultiparameterAssignmentErrors

I am using time_select helper on a form but when submitted I get:

ActiveRecord::MultiparameterAssignmentErrors

I tried a technique found on a website where you remove the offending parameters that are part of the errors hash but it also removes the

date_select from the hash so that my validation fails.

I am using rails 2.0.1.

Upgrade to 2.10