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Editorial Team
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Asked: 2026-05-23T03:07:48+00:00

When I start the debugger I get the following error: Netbeans couldn’t connect to

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When I start the debugger I get the following error:

Netbeans "couldn't connect to server"

When I look at the editor log I see the following exception:

C:/Ruby187/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:29:in `gem_original_require': no such file to load -- require_relative (LoadError)
from C:/Ruby187/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:29:in `require'
from C:/Ruby187/lib/ruby/gems/1.8/gems/linecache-0.45/lib/linecache.rb:66
from C:/Ruby187/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:32:in `gem_original_require'
from C:/Ruby187/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:32:in `require'
from C:/Ruby187/lib/ruby/gems/1.8/gems/ruby-debug-base-0.10.4/lib/ruby-debug-base.rb:3
from C:/Ruby187/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:29:in `gem_original_require'
from C:/Ruby187/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:29:in `require'
from C:/Ruby187/lib/ruby/gems/1.8/gems/ruby-debug-ide-0.4.17.beta5/lib/ruby-debug-ide.rb:5
from C:/Ruby187/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:29:in `gem_original_require'
from C:/Ruby187/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:29:in `require'
from C:/Ruby187/lib/ruby/gems/1.8/gems/ruby-debug-ide-0.4.17.beta5/bin/rdebug-ide:7
from -e:1:in `load'
from -e:1

I am on:

Windows 7 (64bit)
Ruby 1.8.7
Rails 2.3.9

I am using following debug related gems:

ruby-debug-ide (0.4.9)
ruby-debug-base (0.10.4 mswin32)
linecache (0.45)

Note: I was able to reproduce the same issue on RubyMine and Aptana.

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1 Answer

  1. Editorial Team

    The issue is due to the latest version of linecache gem and I had to revert to an older version(0.43).

    I did the following to fix the issue:

    gem uninstall ruby-debug-ide ruby-debug-base linecache
gem install ruby-debug-ide

    Re-install ruby-debug-base gem

    gem uninstall ruby-debug-base
gem install  ruby-debug-base --platform mswin32

    Re-install linecache gem

    gem uninstall linecache
gem install  linecache  -v 0.43
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