Crashing irb


in irb > require ‘RMagick’. Boom irb crashes no messages, no stack.

I have installed GraphicMagick 1.1.7 and can run it from the command
line: ie > inspect.exe xx.gif. I have installed rmagick.1.10.1 and it
shows up in my gemlist and the installed looks successfull. Running the
rmagic test I get the following error > ruby -v -x inspect.rb xx.gif

ruby: no Ruby script found in input (LoadError)

I am running cygwin ruby 1.8.3

Any clues ?

Thank you all !!