I'm still having trouble with the debugger and debugging Here's part of my source ... - - - - 1) #!/usr/bin/env ruby 2) require 'rubygems' 3) require 'ruby-debug' 4) Debugger.start 5) 6) debugger - - - - Here's my session - - - - f:\UltraDedup>ruby -rdebug UltraDedup.rb Debug.rb Emacs support available. UltraDedup.rb:2:require 'rubygems' (rdb:1) b 3 Set breakpoint 1 at UltraDedup.rb:3 (rdb:1) b 4 Set breakpoint 2 at UltraDedup.rb:4 (rdb:1) b 6 Set breakpoint 3 at UltraDedup.rb:6 (rdb:1) c F:/InstantRails-2.0-win/ruby/lib/ruby/1.8/rational.rb:78: `undefined method `gcd' for Rational(1, 2):Rational' (NoMethodError) from F:/InstantRails-2.0-win/ruby/lib/ruby/site_ruby/1.8/rubygems/config_file.rb:220:in `load_file' from F:/InstantRails-2.0-win/ruby/lib/ruby/site_ruby/1.8/rubygems/config_file.rb:168:in `initialize' from F:/InstantRails-2.0-win/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:384:in `new' from F:/InstantRails-2.0-win/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:384:in `configuration' from F:/InstantRails-2.0-win/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:634:in `path' from F:/InstantRails-2.0-win/ruby/lib/ruby/site_ruby/1.8/rubygems/source_index.rb:68:in `installed_spec_directories' from F:/InstantRails-2.0-win/ruby/lib/ruby/site_ruby/1.8/rubygems/source_index.rb:58:in `from_installed_gems' from F:/InstantRails-2.0-win/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:881:in `source_index' from F:/InstantRails-2.0-win/ruby/lib/ruby/site_ruby/1.8/rubygems/gem_path_searcher.rb:81:in `init_gemspecs' from F:/InstantRails-2.0-win/ruby/lib/ruby/site_ruby/1.8/rubygems/gem_path_searcher.rb:13:in `initialize' from F:/InstantRails-2.0-win/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:839:in `new' from F:/InstantRails-2.0-win/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:839:in `searcher' from F:/InstantRails-2.0-win/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:838:in `synchronize' from F:/InstantRails-2.0-win/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:838:in `searcher' from F:/InstantRails-2.0-win/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:478:in `find_files' from F:/InstantRails-2.0-win/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:1103 from UltraDedup.rb:2:in `require' from UltraDedup.rb:2 F:/InstantRails-2.0-win/ruby/lib/ruby/1.8/rational.rb:78: gcd = num.gcd(den) (rdb:1) quit - - - - As you can see ... I either don't stop where I think I'm stopping or I am getting this strange stack before I hit line 3. Any thoughts??? Damn ... I don't have this problem in an Instant Rails environment. I am using Instant Rails to develope a Ruby/FXRuby program. Is that a no-no?