ruby loading module cannot be located

Hi,


I need to use FileUtils ruby lib module.


Error detected while processing function explorer#UnitePaster:
line 36:
LoadError: cannot load such file -- fileutils
eval:4:in `require'


It seems that this module is not recognized and the path not well feeded.
If any of you can help
Thank you
NiVa




Code

ruby << EOF

libx = File.expand_path(VIM::evaluate('g:Ruby_libpath'), __FILE__)
$LOAD_PATH.unshift(libx) unless $LOAD_PATH.include?(libx)
require "fileutils"

EOF

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