# "can't activate activesupport" error

**URL:** <https://www.ruby-forum.com/t/cant-activate-activesupport-error/132507>\
**Category:** Rails\
**Created:** [March 20, 2008, 9:20pm UTC](https://www.ruby-forum.com/t/cant-activate-activesupport-error/132507 "2008-03-20T21:20:12Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![g0nzo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/3bc359/32.png) [@g0nzo](https://www.ruby-forum.com/u/g0nzo)\
**Post date:** [March 20, 2008, 9:20pm UTC](https://www.ruby-forum.com/t/cant-activate-activesupport-error/132507/1 "2008-03-20T21:20:12Z")

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Hi,

I’ve got a production server with rails 1.2.3 installed. Previously my  
app had frozen rails 1.2.3 as well. I decided to update frozen rails  
to 1.2.6.

Deployment went fine until rake task was executed, which resulted in  
the following error:

rake aborted!  
can’t activate activesupport (\>= 1.4.4), already activated  
activesupport-1.4.2]

On the server there’s installed activesupport 1.4.2 (by rails 1.2.3)  
and 1.4.4 needed by will\_paginate gem.

The 1.4.4 it’s complaining about is used by frozen rails 1.2.6. I  
can’t update rails gem to 1.2.6, because there are other rails app  
running.

“mongrel\_rails cluster::start -C …” command says “Starting 3  
Mongrel servers…”, but mongrels are not started.

Do you guys have any idea how to fix it?

BTW. How does one revert deployment made by capistrano/deprec? Can I  
simply modify “current” link to previous release?

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<div class="post-metadata">

**Author:** ![g0nzo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/3bc359/32.png) [@g0nzo](https://www.ruby-forum.com/u/g0nzo)\
**Post date:** [March 20, 2008, 9:59pm UTC](https://www.ruby-forum.com/t/cant-activate-activesupport-error/132507/2 "2008-03-20T21:59:21Z")

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Szymon N. wrote:

> rake aborted!  
> can’t activate activesupport (\>= 1.4.4), already activated  
> activesupport-1.4.2]  
> Try uninstalling 1.4.2, 1.4.4 will gladly take over all necessary  
> duties.

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<div class="post-metadata">

**Author:** ![g0nzo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/3bc359/32.png) [@g0nzo](https://www.ruby-forum.com/u/g0nzo)\
**Post date:** [March 20, 2008, 10:09pm UTC](https://www.ruby-forum.com/t/cant-activate-activesupport-error/132507/3 "2008-03-20T22:09:35Z")

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On 20 Mar, 21:59, Peter B. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
wrote:

> Szymon N. wrote:
> 
> > rake aborted!  
> > can’t activate activesupport (\>= 1.4.4), already activated  
> > activesupport-1.4.2]
> 
> ## Try uninstalling 1.4.2, 1.4.4 will gladly take over all necessary duties.
> 
> Posted viahttp://www.ruby-forum.com/.

Thanks, but rails 1.2.3 requires activesupport 1.4.2, right? I’d like  
to have rails 1.2.3 gem installed and use frozen rails 1.2.6.

Regards,  
Szymek