Irb (LoadError) after fresh One-Click win98 install

ruby-talk
1

just used ruby184-20.exe for a win98 ruby install

I get this when I invoke irb
C:\RUBY\BIN\RUBY.EXE: No such file or directory -- irb (LoadError)

I didn't change any settings during install. Ruby is in c:\ruby. I
rebooted after install.

I found earlier posts on this issue, but I couldn't parse a solution
from them.

batch file problem?

here's irb.bat:

@echo off
if not "%~f0" == "~f0" goto WinNT
ruby -Sx "%0" %1 %2 %3 %4 %5 %6 %7 %8 %9
goto endofruby
:WinNT
"%~d0%~p0ruby" -x "%~f0" %* -r irb/completion
goto endofruby
#!/bin/ruby

···

#
# irb.rb - intaractive ruby
# $Release Version: 0.9.5 $
# $Revision: 1.2.2.1 $
# $Date: 2005/04/19 19:24:56 $
# by Keiju ISHITSUKA(keiju@ruby-lang.org)
#

require "irb"

if __FILE__ == $0
  IRB.start(__FILE__)
else
  # check -e option
  if /^-e$/ =~ $0
    IRB.start(__FILE__)
  else
    IRB.setup(__FILE__)
  end
end
__END__
:endofruby

Looking forward to solving this problem with help from the community.

Thanks