# Problem with blog demo app

**URL:** <https://www.ruby-forum.com/t/problem-with-blog-demo-app/157829>\
**Category:** Rails\
**Created:** [January 15, 2009, 6:25pm UTC](https://www.ruby-forum.com/t/problem-with-blog-demo-app/157829 "2009-01-15T18:25:37Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![technology](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/48db29/32.png) [@technology](https://www.ruby-forum.com/u/technology)\
**Post date:** [January 15, 2009, 6:25pm UTC](https://www.ruby-forum.com/t/problem-with-blog-demo-app/157829/1 "2009-01-15T18:25:37Z")

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[http://guides.rubyonrails.org/getting\_started\_with\_rails.html](http://guides.rubyonrails.org/getting_started_with_rails.html)

The command “rake db.create” shown in section “6.1. Running a  
migration” is failing as follows:

bash-3.2$ pwd  
/Users/jander/work/blog  
bash-3.2$ rake db.create --trace  
(in /Users/jander/work/blog)  
rake aborted!  
Don’t know how to build task ‘db.create’  
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:1706:in `[]' /usr/local/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:2018:in `invoke\_task’  
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:1997:in  
`top_level' /usr/local/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:1997:in `each’  
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:1997:in  
`top_level' /usr/local/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:2036:in `standard\_exception\_handling’  
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:1991:in  
`top_level' /usr/local/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:1970:in `run’  
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:2036:in  
`standard_exception_handling' /usr/local/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:1967:in `run’  
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.3/bin/rake:31  
/usr/local/bin/rake:19:in `load’  
/usr/local/bin/rake:19

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<div class="post-metadata">

**Author:** ![technology](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/48db29/32.png) [@technology](https://www.ruby-forum.com/u/technology)\
**Post date:** [January 15, 2009, 6:30pm UTC](https://www.ruby-forum.com/t/problem-with-blog-demo-app/157829/2 "2009-01-15T18:30:19Z")

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try running rake db:migrate  
I think the problem is you are using a period instead of a colon

Jason

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<div class="post-metadata">

**Author:** ![technology](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/48db29/32.png) [@technology](https://www.ruby-forum.com/u/technology)\
**Post date:** [January 15, 2009, 6:35pm UTC](https://www.ruby-forum.com/t/problem-with-blog-demo-app/157829/3 "2009-01-15T18:35:02Z")

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Thanks, you’re absolutely right! One of the problems of having a very  
high resolution screen…🙂

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<div class="post-metadata">

**Author:** ![technology](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/48db29/32.png) [@technology](https://www.ruby-forum.com/u/technology)\
**Post date:** [January 17, 2009, 12:12pm UTC](https://www.ruby-forum.com/t/problem-with-blog-demo-app/157829/4 "2009-01-17T12:12:21Z")

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Maybe db:create?