# Rails JSR286 portlets

**URL:** <https://www.ruby-forum.com/t/rails-jsr286-portlets/173352>\
**Category:** Deployment\
**Created:** [August 7, 2009, 8:37am UTC](https://www.ruby-forum.com/t/rails-jsr286-portlets/173352 "2009-08-07T08:37:59Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![srinathbtech](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/7bcc69/32.png) [@srinathbtech](https://www.ruby-forum.com/u/srinathbtech)\
**Post date:** [August 7, 2009, 8:37am UTC](https://www.ruby-forum.com/t/rails-jsr286-portlets/173352/1 "2009-08-07T08:37:59Z")

</div>

Hi,

I created rails application and when i tried to build portlets i was  
getting an error .  
Please see my steps

srinath@srinath-laptop:~$ rails example  
srinath@srinath-laptop:~$ cd example/  
srinath@srinath-laptop:~/example$ ls  
app db lib public README test vendor  
config doc log Rakefile script tmp

srinath@srinath-laptop:~/example$ caterpillar portlets  
/usr/local/lib/site\_ruby/1.8/rubygems.rb:149:in `activate': can't activate activesupport (= 2.0.2, runtime), already activated activesupport-2.3.3 (Gem::Exception) from /usr/local/lib/site_ruby/1.8/rubygems.rb:49:in`gem’  
from  
/home/srinath/.gem/ruby/1.8/gems/caterpillar-1.0.1/lib/caterpillar.rb:50  
from  
/home/srinath/.gem/ruby/1.8/gems/caterpillar-1.0.1/lib/caterpillar.rb:47:in  
`each' from /home/srinath/.gem/ruby/1.8/gems/caterpillar-1.0.1/lib/caterpillar.rb:47 from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:31:in`gem\_original\_require’  
from /usr/local/lib/site\_ruby/1.8/rubygems/custom\_require.rb:

I installed caterpillar gem and also have rails 2.3.3, 2.1.2, 2.0.2…

Could any one help me on this …