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Rails 3 - Windows Vista x64 - Error "different prefix:" - Two Hard Drives

#4113

This unique situation comes from having your Ruby on Rails project on one hard drive and your bundler gems installed by default on another drive.

I have confirmed with Bundler Dev that this issue is coming from Rails and probably ActiveSupport

This issue was resolved by creating a system link and launching rails server from within the 'new' system link folder.

C:>mklink /D c:\ra200 "D:\ra200"

* Error Message:
different prefix: "D:/" and "C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/railties/builtin/rails_info"

The command you ran to generate exception(s)

ruby script/rails server
(Then access your Rails project)
The exception backtrace(s)

D:/Ruby19/lib/ruby/1.9.1/pathname.rb:742:in relative_path_from' C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/dependencies.rb:357:inblock in loadable_constants_for_path'
C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/dependencies.rb:355:in each' C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/dependencies.rb:355:ininject'
C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/dependencies.rb:355:in loadable_constants_for_path' C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/dependencies.rb:408:inload_file'
C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/dependencies.rb:310:in require_or_load' C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/dependencies.rb:452:inload_missing_constant'
C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/dependencies.rb:153:in block in const_missing' C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/dependencies.rb:151:ineach'
C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/dependencies.rb:151:in const_missing' C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/inflector/methods.rb:112:inblock in constantize'
C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/inflector/methods.rb:111:in each' C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/inflector/methods.rb:111:inconstantize'
C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/actionpack/lib/action_dispatch/routing/route_set.rb:47:in controller' C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/actionpack/lib/action_dispatch/routing/route_set.rb:25:incall'
rack-mount (0.5.2) lib/rack/mount/recognition/route_set.rb:75:in block in call' rack-mount (0.5.2) lib/rack/mount/recognition/code_generation.rb:99:inblock in recognize'
rack-mount (0.5.2) lib/rack/mount/recognition/code_generation.rb:76:in optimized_each' rack-mount (0.5.2) lib/rack/mount/recognition/code_generation.rb:98:inrecognize'
rack-mount (0.5.2) lib/rack/mount/recognition/route_set.rb:66:in call' C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/actionpack/lib/action_dispatch/routing/route_set.rb:417:incall'
C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activerecord/lib/active_record/query_cache.rb:29:in block in call' C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb:34:incache'
C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activerecord/lib/active_record/query_cache.rb:9:in cache' C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activerecord/lib/active_record/query_cache.rb:28:incall'
C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb:365:in call' C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/actionpack/lib/action_dispatch/middleware/head.rb:14:incall'
C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rack-7f693f2e7da5dbeb0403886fdee49dbe39a6beda-master/lib/rack/methodoverride.rb:24:in call' C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/actionpack/lib/action_dispatch/middleware/params_parser.rb:20:incall'
C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/actionpack/lib/action_dispatch/middleware/flash.rb:167:in call' C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/actionpack/lib/action_dispatch/middleware/session/cookie_store.rb:107:incall'
C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/actionpack/lib/action_dispatch/middleware/cookies.rb:205:in call' C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/actionpack/lib/action_dispatch/middleware/callbacks.rb:46:inblock in call'
C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/callbacks.rb:429:in _run_call_callbacks' C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/callbacks.rb:88:inrun_callbacks'
C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/actionpack/lib/action_dispatch/middleware/callbacks.rb:44:in call' C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rack-7f693f2e7da5dbeb0403886fdee49dbe39a6beda-master/lib/rack/sendfile.rb:105:incall'
C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/actionpack/lib/action_dispatch/middleware/remote_ip.rb:48:in call' C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/actionpack/lib/action_dispatch/middleware/show_exceptions.rb:62:incall'
C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/railties/lib/rails/rack/logger.rb:13:in call' C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rack-7f693f2e7da5dbeb0403886fdee49dbe39a6beda-master/lib/rack/runtime.rb:17:incall'
C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rack-7f693f2e7da5dbeb0403886fdee49dbe39a6beda-master/lib/rack/lock.rb:11:in block in call' <internal:prelude>:8:insynchronize'
C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rack-7f693f2e7da5dbeb0403886fdee49dbe39a6beda-master/lib/rack/lock.rb:11:in call' C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/actionpack/lib/action_dispatch/middleware/static.rb:30:incall'
C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/railties/lib/rails/application.rb:91:in call' C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/railties/lib/rails/application.rb:41:inmethod_missing'
C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/railties/lib/rails/rack/log_tailer.rb:15:in call' C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rack-7f693f2e7da5dbeb0403886fdee49dbe39a6beda-master/lib/rack/content_length.rb:13:incall'
C:/Users/Christopher/.bundle/ruby/1.9.1/bundler/gems/rack-7f693f2e7da5dbeb0403886fdee49dbe39a6beda-master/lib/rack/handler/webrick.rb:48:in service' D:/Ruby19/lib/ruby/1.9.1/webrick/httpserver.rb:111:inservice'
D:/Ruby19/lib/ruby/1.9.1/webrick/httpserver.rb:70:in run' D:/Ruby19/lib/ruby/1.9.1/webrick/server.rb:183:inblock in start_thread'

Reported by Chris Westbrook · March 5th, 2010 @ 04:30 PM

State: new
Milestone: 3.0.6
Assigned to: Yehuda Katz (wycats) Yehuda Katz (wycats)
Importance: Low

Activity

  1. José Valim
    José Valim
    • Assigned user set to Yehuda Katz (wycats)
    • Milestone cleared.

    March 26th, 2010 @ 10:48 PM

  2. Damien White
    Damien White

    Thanks for the workaround Chris, the mklink worked like a charm.

    -Damien

    May 23rd, 2010 @ 08:51 PM

  3. Dave Sanders
    Dave Sanders

    FYI, this isn't just when the files are on two different drives. Here I have the error cropping up even though ruby is installed on my D: drive, which also where my rails app and sever are running from.

    different prefix: "d:/" and "D:/Ruby187/lib/ruby/gems/1.8/gems/declarative_authorization-0.4.1/app/controllers"

    Rails.root: d:/git/PestNow/PestNow

    D:/Ruby187/lib/ruby/1.8/pathname.rb:723:in relative_path_from'<br/> activesupport (3.0.0.beta4) lib/active_support/dependencies.rb:360:inloadable_constants_for_path'
    rack-mount (0.6.4) lib/rack/mount/code_generation.rb:61:in inject'<br/> activesupport (3.0.0.beta4) lib/active_support/dependencies.rb:358:ineach'
    activesupport (3.0.0.beta4) lib/active_support/dependencies.rb:358:in inject'<br/> activesupport (3.0.0.beta4) lib/active_support/dependencies.rb:358:inloadable_constants_for_path'
    activesupport (3.0.0.beta4) lib/active_support/dependencies.rb:411:in load_file'<br/> activesupport (3.0.0.beta4) lib/active_support/dependencies.rb:313:inrequire_or_load'
    activesupport (3.0.0.beta4) lib/active_support/dependencies.rb:455:in load_missing_constant'<br/> activesupport (3.0.0.beta4) lib/active_support/dependencies.rb:156:inconst_missing'
    activesupport (3.0.0.beta4) lib/active_support/dependencies.rb:154:in each'<br/> activesupport (3.0.0.beta4) lib/active_support/dependencies.rb:154:inconst_missing'
    activesupport (3.0.0.beta4) lib/active_support/inflector/methods.rb:103:in constantize'<br/> activesupport (3.0.0.beta4) lib/active_support/inflector/methods.rb:102:ineach'
    activesupport (3.0.0.beta4) lib/active_support/inflector/methods.rb:102:in constantize'<br/> activesupport (3.0.0.beta4) lib/active_support/dependencies.rb:487<br/> activesupport (3.0.0.beta4) lib/active_support/dependencies.rb:497:incall'
    activesupport (3.0.0.beta4) lib/active_support/dependencies.rb:497:in default'<br/> activesupport (3.0.0.beta4) lib/active_support/dependencies.rb:497:in[]'
    activesupport (3.0.0.beta4) lib/active_support/dependencies.rb:497:in get'<br/> actionpack (3.0.0.beta4) lib/action_dispatch/routing/route_set.rb:44:incontroller'
    actionpack (3.0.0.beta4) lib/action_dispatch/routing/route_set.rb:23:in call'<br/> rack-mount (0.6.4) lib/rack/mount/route_set.rb:148:incall'
    rack-mount (0.6.4) lib/rack/mount/code_generation.rb:89:in recognize'<br/> rack-mount (0.6.4) lib/rack/mount/code_generation.rb:66:inoptimized_each'
    rack-mount (0.6.4) lib/rack/mount/code_generation.rb:88:in recognize'<br/> rack-mount (0.6.4) lib/rack/mount/route_set.rb:139:incall'
    actionpack (3.0.0.beta4) lib/action_dispatch/routing/route_set.rb:457:in call'<br/> haml (3.0.12) lib/sass/plugin/rack.rb:41:incall'
    actionpack (3.0.0.beta4) lib/action_dispatch/middleware/head.rb:14:in call'<br/> rack (1.1.0) lib/rack/methodoverride.rb:24:incall'
    actionpack (3.0.0.beta4) lib/action_dispatch/middleware/params_parser.rb:21:in call'<br/> actionpack (3.0.0.beta4) lib/action_dispatch/middleware/flash.rb:177:incall'
    actionpack (3.0.0.beta4) lib/action_dispatch/middleware/session/abstract_store.rb:106:in call'<br/> actionpack (3.0.0.beta4) lib/action_dispatch/middleware/cookies.rb:235:incall'
    activerecord (3.0.0.beta4) lib/active_record/query_cache.rb:31:in call'<br/> activerecord (3.0.0.beta4) lib/active_record/connection_adapters/abstract/query_cache.rb:28:incache'
    activerecord (3.0.0.beta4) lib/active_record/query_cache.rb:11:in cache'<br/> activerecord (3.0.0.beta4) lib/active_record/query_cache.rb:30:incall'
    activerecord (3.0.0.beta4) lib/active_record/connection_adapters/abstract/connection_pool.rb:365:in call'<br/> actionpack (3.0.0.beta4) lib/action_dispatch/middleware/callbacks.rb:46:incall'
    activesupport (3.0.0.beta4) lib/active_support/callbacks.rb:414:in _run_call_callbacks'<br/> activesupport (3.0.0.beta4) lib/active_support/callbacks.rb:88:insend'
    activesupport (3.0.0.beta4) lib/active_support/callbacks.rb:88:in run_callbacks'<br/> actionpack (3.0.0.beta4) lib/action_dispatch/middleware/callbacks.rb:44:incall'
    rack (1.1.0) lib/rack/sendfile.rb:105:in call'<br/> actionpack (3.0.0.beta4) lib/action_dispatch/middleware/remote_ip.rb:48:incall'
    actionpack (3.0.0.beta4) lib/action_dispatch/middleware/show_exceptions.rb:48:in call'<br/> railties (3.0.0.beta4) lib/rails/rack/logger.rb:14:incall'
    rack (1.1.0) lib/rack/runtime.rb:17:in call'<br/> activesupport (3.0.0.beta4) lib/active_support/cache/strategy/local_cache.rb:72:incall'
    rack (1.1.0) lib/rack/lock.rb:11:in call'<br/> rack (1.1.0) lib/rack/lock.rb:11:insynchronize'
    rack (1.1.0) lib/rack/lock.rb:11:in call'<br/> actionpack (3.0.0.beta4) lib/action_dispatch/middleware/static.rb:30:incall'
    railties (3.0.0.beta4) lib/rails/application.rb:145:in call'<br/> railties (3.0.0.beta4) lib/rails/application.rb:81:insend'
    railties (3.0.0.beta4) lib/rails/application.rb:81:in method_missing'<br/> railties (3.0.0.beta4) lib/rails/rack/log_tailer.rb:15:incall'
    rack (1.1.0) lib/rack/content_length.rb:13:in call'<br/> rack (1.1.0) lib/rack/handler/webrick.rb:48:inservice'
    D:/Ruby187/lib/ruby/1.8/webrick/httpserver.rb:104:in service'<br/> D:/Ruby187/lib/ruby/1.8/webrick/httpserver.rb:65:inrun'
    D:/Ruby187/lib/ruby/1.8/webrick/server.rb:173:in start_thread'<br/> D:/Ruby187/lib/ruby/1.8/webrick/server.rb:162:instart'
    D:/Ruby187/lib/ruby/1.8/webrick/server.rb:162:in start_thread'<br/> D:/Ruby187/lib/ruby/1.8/webrick/server.rb:95:instart'
    D:/Ruby187/lib/ruby/1.8/webrick/server.rb:92:in each'<br/> D:/Ruby187/lib/ruby/1.8/webrick/server.rb:92:instart'
    D:/Ruby187/lib/ruby/1.8/webrick/server.rb:23:in start'<br/> D:/Ruby187/lib/ruby/1.8/webrick/server.rb:82:instart'
    rack (1.1.0) lib/rack/handler/webrick.rb:14:in run'<br/> rack (1.1.0) lib/rack/server.rb:155:instart'
    railties (3.0.0.beta4) lib/rails/commands/server.rb:62:in start'<br/> railties (3.0.0.beta4) lib/rails/commands.rb:30<br/> railties (3.0.0.beta4) lib/rails/commands.rb:27:intap'
    railties (3.0.0.beta4) lib/rails/commands.rb:27
    script/rails:6:in require'<br/> script/rails:6

    hope it helps, basically putting me to a standstill - I don't see how to mklink my way out of this one?

    June 14th, 2010 @ 02:06 AM

  4. Jeremy Kemper
    Jeremy Kemper
    • Milestone cleared.
    • Importance changed from to Low

    August 30th, 2010 @ 04:10 AM

  5. Jeremy Kemper
    Jeremy Kemper
    • Milestone set to 3.0.2

    October 15th, 2010 @ 11:01 PM

  6. Ryan Bigg
    Ryan Bigg

    Automatic cleanup of spam.

    October 19th, 2010 @ 08:34 AM

  7. Santiago Pastorino
    Santiago Pastorino
    • Milestone cleared.

    November 15th, 2010 @ 09:15 PM

  8. Santiago Pastorino
    Santiago Pastorino
    • Milestone set to 3.0.5

    February 12th, 2011 @ 09:58 PM

  9. Santiago Pastorino
    Santiago Pastorino
    • Milestone changed from 3.0.5 to 3.0.6

    February 27th, 2011 @ 03:15 AM