When I run rake db:migrate, I get the following error message. How to
solve this?
C:\testror\depot>rake db:migrate --trace
(in C:/testror/depot)
** Invoke db:migrate (first_time)
** Invoke environment (first_time)
** Execute environment
** Execute db:migrate
rake aborted!
182: operating system cannot run %1. - c:/ruby/lib/ruby/gem
s/1.8/gems/ruby-postgres-0.7.1.2006.04.06-mswin32/./postgres.so
c:/ruby/lib/ruby/gems/1.8/gems/ruby-postgres-0.7.1.2006.04.06-
mswin32/./postgres
.so
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:32:in
require' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/ dependenci es.rb:496:inrequire’
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/
dependenci
es.rb:342:in new_constants_in' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/ dependenci es.rb:496:inrequire’
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/
core_ext/k
ernel/requires.rb:7:in require_library_or_gem' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/ core_ext/k ernel/reporting.rb:11:insilence_warnings’
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/
core_ext/k
ernel/requires.rb:5:in require_library_or_gem' c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/ connection_a dapters/postgresql_adapter.rb:7:inpostgresql_connection’
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/
connection_a
dapters/abstract/connection_specification.rb:291:in send' c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/ connection_a dapters/abstract/connection_specification.rb:291:inconnection=’
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/
connection_a
dapters/abstract/connection_specification.rb:259:in
retrieve_connection' c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/ connection_a dapters/abstract/connection_specification.rb:78:inconnection’
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/
migration.rb
:294:in migrate' c:/ruby/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/tasks/databases.rake:85 c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:546:incall’
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:546:in execute' c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:541:ineach’
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:541:in execute' c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:508:ininvoke_with_call_c
hain’
c:/ruby/lib/ruby/1.8/thread.rb:135:in synchronize' c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:501:ininvoke_with_call_c
hain’
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:494:in invoke' c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1931:ininvoke_task’
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1909:in
top_level' c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1909:ineach’
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1909:in
top_level' c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1948:instandard_exceptio
n_handling’
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1903:in
top_level' c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1881:inrun’
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1948:in
standard_exceptio n_handling' c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1878:inrun’
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/bin/rake:31
c:/ruby/bin/rake:19:in `load’
c:/ruby/bin/rake:19
C:\testror\depot>