I have googled around a lot to find answers and cannot find one. How do I resolve this dependency issue. If I remove sass-rails (which isn't practical but just for testing issues) then the problem just rolls down the Gemfile to coffee-rails having the dependency conflict.
Bundler could not find compatible versions for gem "railties":
In Gemfile:
doorkeeper (~> 0.6.7) java depends on
railties (~> 3.1) java
sass-rails (~> 4.0.0.beta1) java depends on
railties (4.0.0.beta1)
I have tried deleting the Gemfile.lock and redoing the bundle install. No joy.