<internal:lib/rubygems/custom_require>:29:in `require': no such file to load --
rdoc/ri/ri_driver (LoadError)
        from <internal:lib/rubygems/custom_require>:29:in `require'
        from c:/Ruby/Ruby192/lib/ruby/gems/1.9.1/gems/fxri-0.3.7/lib/RiManager.r
b:2:in `<top (required)>'
        from <internal:lib/rubygems/custom_require>:29:in `require'
        from <internal:lib/rubygems/custom_require>:29:in `require'
        from c:/Ruby/Ruby192/lib/ruby/gems/1.9.1/gems/fxri-0.3.7/fxri.rb:41:in `
<top (required)>'
        from c:/Ruby/Ruby192/lib/ruby/gems/1.9.1/gems/fxri-0.3.7/fxri:4:in `load
'
        from c:/Ruby/Ruby192/lib/ruby/gems/1.9.1/gems/fxri-0.3.7/fxri:4:in `<top
 (required)>'
        from c:/Ruby/Ruby192/bin/fxri:19:in `load'
        from c:/Ruby/Ruby192/bin/fxri:19:in `<main>'




$ PATH LOAD ERROR WHAT TO DO?

Date: 2010-12-11 20:18
Sender: Tad Bochan

I had the same error.
The file rdoc/ri/ri_driver just doesn't exist in 1.9.2, although
it does exist in 1.8.6.
(Both versions were installed via gem install fxri within minutes
of each other.)
It is probably no longer maintained.