Problem finding/using installed gems

Hi all,

I installed a gem but it doesn't work properly (can't call methods on
this), though object instantiation seemed to work:
flickr = gives a valid object.

To check what happens I have inserted some code in the initializer of
this class (Flickr) in the lib. But the initializer is not being
executed. I even inserted a 'division by zero' but no error comes up.

So how can it be that I can instantiate an object but it's initialize
is not being called ?