Hello, i found that starting a ruby script on window may result in a wrong ARGV. For example: ruby scan_paths.rb "C:\" "D:\" results in an ARGV array with just one element 'C:\" D:\"' but it must result in two strings. -- Best regards, emailto: scholz at scriptolutions dot com Lothar Scholz http://www.ruby-ide.com CTO Scriptolutions Ruby, PHP, Python IDE 's