Ruby on Rails Wednesday, February 29, 2012

I have the same problem. Here is an attempt to recreate the steps that
caused it for me:

Platform Windows 7 x64
- installed latest git (1.7.8.msysgit.0)
- installed RailsInstaller (ruby 1.9.3)
- installed DevKit
- installed Heroku tools w/o Git

I also have cygwin installed (not sure that is relevant but there have
been issues with mingw32 apps). After installing all of the above I did
the following:

- Ran "gems update"
- Followed Rails Tutorial exactly

The tutorial process failed at the step for pushing to Heroku with error
shown in the original question. I tried to work around the problem:

* Tried changing Gemfile back to "~> " versions
* Deleted extra local versions of installed railsties and
sass-rails, reinstalled only the specified versions
* Tried using sass-rails 3.2.4 in Gemfile in hopes the dependency
would correct itself

Nothing worked. Sometimes a local "bundle update"/"bundle install" would
work, sometimes it would fail. It seemed to always work from a git bash
window and cmd.exe failed most of the time. But no matter what the
outcome locally, when I tried to push to Heroku it always gave the
error message above.

Rubygems.org clearly shows that the sass-rails dependency on railties
should be on 3.2.0.beta so something funky is going on. Just wish I knew
what it is.

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