Count not working?

Rails
1

I’m having some trouble with the count method on AR objects. Here is
a stack trace:

t.subscriptions.count
ArgumentError: wrong number of arguments (2 for 3)
from /opt/local/lib/ruby/gems/1.8/gems/activerecord-1.14.4/
lib/active_record/calculations.rb:160:in add_limit!' from /opt/local/lib/ruby/gems/1.8/gems/activerecord-1.14.4/ lib/active_record/calculations.rb:160:inconstruct_calculation_sql’
from /opt/local/lib/ruby/gems/1.8/gems/activerecord-1.14.4/
lib/active_record/calculations.rb:165:in execute_simple_calculation' from /opt/local/lib/ruby/gems/1.8/gems/activerecord-1.14.4/ lib/active_record/calculations.rb:144:incalculate’
from /opt/local/lib/ruby/gems/1.8/gems/activerecord-1.14.4/
lib/active_record/calculations.rb:66:in count' from /opt/local/lib/ruby/gems/1.8/gems/activerecord-1.14.4/ lib/active_record/associations/has_many_association.rb:47:incount’
from (irb):3

The error seems pretty weird, given that add_limit! seems to take 3
parameters where it’s defined, but the third has a default value and
is thus optional. What’s going on here?

Thanks,
Martin