[rspec-users] Wrong ZenTest being used?

[Steve]

When I try to run autotest I get the following error:

loading autotest/rails_rspec
/usr/local/lib/site_ruby/1.8/rubygems.rb:319:in `activate': can't 
activate ZenTest (= 3.7.1), already activated ZenTest-3.9.1] 
(Gem::Exception)

This is after just upgrading to the latest of everything from a 
previously working much earlier rev of rspec/rails, and zentest. I'm 
guessing something old is lingering around. Where would I be best off 
looking?

Thanks,
Steve