# Constant Synthesis not found , rake Aborted!

**URL:** <https://www.ruby-forum.com/t/constant-synthesis-not-found-rake-aborted/119029>\
**Category:** Rails\
**Created:** [November 2, 2007, 10:56am UTC](https://www.ruby-forum.com/t/constant-synthesis-not-found-rake-aborted/119029 "2007-11-02T10:56:43Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![shyl\_ruby](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/51bf81/32.png) [@shyl\_ruby](https://www.ruby-forum.com/u/shyl_ruby)\
**Post date:** [November 2, 2007, 10:56am UTC](https://www.ruby-forum.com/t/constant-synthesis-not-found-rake-aborted/119029/1 "2007-11-02T10:56:43Z")

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I was trying to execute rake:migrarte . I am getting an error related to  
Synthesis,

Given below is the out put.

E:…\trunk\>rake db:migrate  
(in E:/…/trunk)  
rake aborted!  
Constant Rails::Synthesis from rails/synthesis.rb not found  
Constant Synthesis from synthesis.rb not found

Thanks,  
shilesh.