Redmine

We recently upgraded to redmine 2.6.0:

Environment:
Redmine version 2.6.0.stable
Ruby version 2.0.0-p594 (2014-10-27) [i386-mingw32]
Rails version 3.2.19
Environment production
Database adapter Mysql2
SCM:
Subversion 1.8.10
Git 1.9.5
Filesystem 
Redmine plugins:
redmine_code_review 0.6.4
redmine_issue_templates 0.0.9
redmine_ldap_sync 2.0.4
redmine_logs 0.0.5
redmine_wiki_extensions 0.6.5

All this beauty installed on Windows server 2008R2 using the Bitnami Redmine stack.

Since the upgrade, Redmine keeps crashing at very high interval.
I started investigating this and noticed that the logs at the admin interface looks normal.
I started suspecting that it is the underlying 'thin' that causes the problems.
I ran Redmine from the 'C:\Bitnami\redmine-2.6.0-3\use_redmine.bat' (Bitnami's way to ensure all environment variables are set before working) with the following commands:

"c:\Bitnami\redmine-2.6.0-3\ruby\bin\ruby.exe" "c:\Bitnami\redmine-2.6.0-3\apps\redmine\htdocs\bin\thin" start -p 3001 -e production -c "c:\Bitnami\redmine-2.6.0-3\apps\redmine\htdocs" -a 127.0.0.1 --prefix /redmine 
"c:\Bitnami\redmine-2.6.0-3\ruby\bin\ruby.exe" "c:\Bitnami\redmine-2.6.0-3\apps\redmine\htdocs\bin\thin" start -p 3002 -e production -c "c:\Bitnami\redmine-2.6.0-3\apps\redmine\htdocs" -a 127.0.0.1 --prefix /redmine

And noticed the following error on the standard error output:

cache error: Permission denied - c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/tmp/cache/7AB/822/http%3A%2F%2Fredmine-srv%2Fredmine%2Fplugin_assets%2Fredmine_ldap_sync%2Fstylesheets%2Fldap_sync.css%3F1419771912%3D
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:1439:in `unlink'
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:1439:in `block in remove_file'
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:1447:in `platform_support'
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:1438:in `remove_file'
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:515:in `block in mv'
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:1558:in `block in fu_each_src_dest'
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:1574:in `fu_each_src_dest0'
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:1556:in `fu_each_src_dest'
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:508:in `mv'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.19/lib/active_support/core_ext/file/atomic.rb:36:in `atomic_write'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.19/lib/active_support/cache/file_store.rb:92:in `write_entry'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.19/lib/active_support/cache/strategy/local_cache.rb:140:in `write_entry'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.19/lib/active_support/cache.rb:364:in `block in write'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.19/lib/active_support/cache.rb:520:in `instrument'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.19/lib/active_support/cache.rb:362:in `write'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/actionpack-3.2.19/lib/action_dispatch/http/rack_cache.rb:25:in `write'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-cache-1.2/lib/rack/cache/metastore.rb:83:in `store'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-cache-1.2/lib/rack/cache/context.rb:267:in `store'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-cache-1.2/lib/rack/cache/context.rb:232:in `validate'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-cache-1.2/lib/rack/cache/context.rb:181:in `lookup'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-cache-1.2/lib/rack/cache/context.rb:66:in `call!'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-cache-1.2/lib/rack/cache/context.rb:51:in `call'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/railties-3.2.19/lib/rails/engine.rb:484:in `call'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/railties-3.2.19/lib/rails/application.rb:231:in `call'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/railties-3.2.19/lib/rails/railtie/configurable.rb:30:in `method_missing'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-1.4.5/lib/rack/urlmap.rb:64:in `block in call'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-1.4.5/lib/rack/urlmap.rb:49:in `each'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-1.4.5/lib/rack/urlmap.rb:49:in `call'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/connection.rb:82:in `block in pre_process'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/connection.rb:80:in `catch'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/connection.rb:80:in `pre_process'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/connection.rb:55:in `process'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/connection.rb:41:in `receive_data'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/eventmachine-1.0.4/lib/eventmachine.rb:187:in `run_machine'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/eventmachine-1.0.4/lib/eventmachine.rb:187:in `run'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/backends/base.rb:73:in `start'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/server.rb:162:in `start'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/controllers/controller.rb:87:in `start'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/runner.rb:200:in `run_command'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/runner.rb:156:in `run!'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/bin/thin:6:in `<top (required)>'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/bin/thin:16:in `load'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/bin/thin:16:in `<main>'
cache error: Permission denied - c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/tmp/cache/A4A/FD1/http%3A%2F%2Fredmine-srv%2Fredmine%2Fjavascripts%2Fapplication.js%3F1413918791%3D
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:1439:in `unlink'
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:1439:in `block in remove_file'
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:1447:in `platform_support'
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:1438:in `remove_file'
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:515:in `block in mv'
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:1558:in `block in fu_each_src_dest'
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:1574:in `fu_each_src_dest0'
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:1556:in `fu_each_src_dest'
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:508:in `mv'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.19/lib/active_support/core_ext/file/atomic.rb:36:in `atomic_write'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.19/lib/active_support/cache/file_store.rb:92:in `write_entry'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.19/lib/active_support/cache/strategy/local_cache.rb:140:in `write_entry'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.19/lib/active_support/cache.rb:364:in `block in write'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.19/lib/active_support/cache.rb:520:in `instrument'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.19/lib/active_support/cache.rb:362:in `write'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/actionpack-3.2.19/lib/action_dispatch/http/rack_cache.rb:25:in `write'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-cache-1.2/lib/rack/cache/metastore.rb:83:in `store'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-cache-1.2/lib/rack/cache/context.rb:267:in `store'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-cache-1.2/lib/rack/cache/context.rb:232:in `validate'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-cache-1.2/lib/rack/cache/context.rb:181:in `lookup'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-cache-1.2/lib/rack/cache/context.rb:66:in `call!'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-cache-1.2/lib/rack/cache/context.rb:51:in `call'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/railties-3.2.19/lib/rails/engine.rb:484:in `call'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/railties-3.2.19/lib/rails/application.rb:231:in `call'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/railties-3.2.19/lib/rails/railtie/configurable.rb:30:in `method_missing'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-1.4.5/lib/rack/urlmap.rb:64:in `block in call'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-1.4.5/lib/rack/urlmap.rb:49:in `each'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-1.4.5/lib/rack/urlmap.rb:49:in `call'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/connection.rb:82:in `block in pre_process'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/connection.rb:80:in `catch'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/connection.rb:80:in `pre_process'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/connection.rb:55:in `process'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/connection.rb:41:in `receive_data'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/eventmachine-1.0.4/lib/eventmachine.rb:187:in `run_machine'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/eventmachine-1.0.4/lib/eventmachine.rb:187:in `run'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/backends/base.rb:73:in `start'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/server.rb:162:in `start'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/controllers/controller.rb:87:in `start'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/runner.rb:200:in `run_command'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/runner.rb:156:in `run!'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/bin/thin:6:in `<top (required)>'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/bin/thin:16:in `load'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/bin/thin:16:in `<main>'
cache error: Permission denied - c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/tmp/cache/3B3/541/http%3A%2F%2Fredmine-srv%2Fredmine%2Ffavicon.ico%3F1413918791%3D
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:1439:in `unlink'
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:1439:in `block in remove_file'
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:1447:in `platform_support'
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:1438:in `remove_file'
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:515:in `block in mv'
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:1558:in `block in fu_each_src_dest'
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:1574:in `fu_each_src_dest0'
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:1556:in `fu_each_src_dest'
c:/Bitnami/redmine-2.6.0-3/ruby/lib/ruby/2.0.0/fileutils.rb:508:in `mv'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.19/lib/active_support/core_ext/file/atomic.rb:36:in `atomic_write'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.19/lib/active_support/cache/file_store.rb:92:in `write_entry'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.19/lib/active_support/cache/strategy/local_cache.rb:140:in `write_entry'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.19/lib/active_support/cache.rb:364:in `block in write'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.19/lib/active_support/cache.rb:520:in `instrument'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.19/lib/active_support/cache.rb:362:in `write'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/actionpack-3.2.19/lib/action_dispatch/http/rack_cache.rb:25:in `write'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-cache-1.2/lib/rack/cache/metastore.rb:83:in `store'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-cache-1.2/lib/rack/cache/context.rb:267:in `store'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-cache-1.2/lib/rack/cache/context.rb:232:in `validate'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-cache-1.2/lib/rack/cache/context.rb:181:in `lookup'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-cache-1.2/lib/rack/cache/context.rb:66:in `call!'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-cache-1.2/lib/rack/cache/context.rb:51:in `call'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/railties-3.2.19/lib/rails/engine.rb:484:in `call'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/railties-3.2.19/lib/rails/application.rb:231:in `call'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/railties-3.2.19/lib/rails/railtie/configurable.rb:30:in `method_missing'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-1.4.5/lib/rack/urlmap.rb:64:in `block in call'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-1.4.5/lib/rack/urlmap.rb:49:in `each'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/rack-1.4.5/lib/rack/urlmap.rb:49:in `call'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/connection.rb:82:in `block in pre_process'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/connection.rb:80:in `catch'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/connection.rb:80:in `pre_process'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/connection.rb:55:in `process'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/connection.rb:41:in `receive_data'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/eventmachine-1.0.4/lib/eventmachine.rb:187:in `run_machine'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/eventmachine-1.0.4/lib/eventmachine.rb:187:in `run'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/backends/base.rb:73:in `start'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/server.rb:162:in `start'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/controllers/controller.rb:87:in `start'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/runner.rb:200:in `run_command'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/lib/thin/runner.rb:156:in `run!'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/vendor/bundle/ruby/2.0.0/gems/thin-1.6.1-x86-mingw32/bin/thin:6:in `<top (required)>'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/bin/thin:16:in `load'
c:/Bitnami/redmine-2.6.0-3/apps/redmine/htdocs/bin/thin:16:in `<main>'

I know this points out to permissions problem, but I double checked and re-applied proper permissions and this keeps on happening, even when running the command under administrator user.

Does anyone encountered this in the past or have any idea on how to solve this?

Thanks in advance,
Eitan.