Hi Lyle, Thanks a lot for weighing in on my plight. It's great to hear from a bonafide expert. Your advice was excellent. I apologize for imposing on this newsgroup with another question that arose, I believe, from my overly zealous "uninstalling". Following your guidance, detailed in gory detail as an appendix, the uninstalls and reinstall of FxRuby and Rails went smoothly. However, testing the installation failed probably because on my mistake. If my proposed solution below is sound, I'd just like an OK. ** The test ** In the Command window, I changed the directory to: K:\_Utilities\Ruby_1.8.2-15\lib\ruby\gems\1.8\gems\fxruby-1.4.2\examples Ran command: ruby bounce.rb ** The result ** Got error message: k:/_utilities/ruby_1.8.2-15/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:18: in `require__': No such file to load -- fox14 (LoadError) ** The cause?? ** As I mentioned below, after the two uninstalls you recommended, there remained two (sprurious, I thought) fox14 directories, one in lib and one in ext as I recall. Sadly, I didn't save them in Recycle bin, so I can't recover them.. ** The solution?? ** gem uninstall rails gem uninstall fxruby Control Panel | Add/Remove Pgms: Ruby Reinstall Ruby gem update gem install rails > Hope this helps It certainly did!! I apologize from (apparently) screwing it up. Best wishes, Richard Muller ******** Installation details *************** > ... first uninstall the FxRuby by using Windows' "Add/Remove Program" Uninstalled cleanly ... even removed the subdirectory I had incorrectly created! > ... use the "gem uninstall" command Another clean uninstall! Additionally, I manually deleted the other two fx14 directories. ERROR, I think: see problem below However, I left the existing "K:\_Utilities\Ruby_1.8.2-15\lib\ruby\gems\1.8\gems\fxruby-1.4.2" folder with its populated subdirectories, doc,examples,ext,lib,... intact. "gem update" and "gem install rails" (with all its dependencies) went smoothly. I wound up putting a short cut in K:\_Utilities\Ruby_1.8.2-15 to FxRuby-1.4.2's location: K:\_Utilities\Ruby_1.8.2-15\lib\ruby\gems\1.8\gems\fxruby-1.4.2 (Sorry: Ughh)