I had the same problem, and found the solution here: https://github.com/jm/rails_upgrade/issues#issue/7/comment/497475
There's a required gem that uses fork(), of which there is a windows version that doesn't. So first, you have to... gem install win32-open3 ...and then you edit the file as stated in the link, I quote: edit vendor\plugins\rails_upgrade\lib\application_checker.rb and change: require 'open3' to require 'win32/open3' Cheers, Guido On Oct 27, 7:50 pm, Marc Bungart <[email protected]> wrote: > Hi daze, > > I’m trying the same without a solution yet. Did you make any progress? > > Kind regards > Marc > > -- > Posted viahttp://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.

