uninitialized constant Logging

I am trying to figure out a problem I am having getting Rails working on
my local osx machine. I have spent a few hours today working out a ruby
conflict issue, and just been reinstalling a load of gems.

My issue atm is not being able to start Passenger or run rake due to
these errors:

rake says:

uninitialized constant Logging (NameError)

Passenger says:

no such file to load -- logger