restricted some aws-sdk versions that aren't compatiable with paperclip -- fixes #1968

lib/paperclip/storage/s3.rb

@@ -126,6 +126,9 @@ module Paperclip
             e.message << " (You may need to install the aws-sdk gem)"
             raise e
           end
+          if Gem::Version.new(AWS_CLASS::VERSION) >= Gem::Version.new(2) && Gem::Version.new(AWS_CLASS::VERSION) <= Gem::Version.new("2.0.33")
+            raise LoadError, "paperclip does not support aws-sdk versions 2.0.0 - 2.0.33.  Please upgrade aws-sdk to a newer version."
+          end
         end
 
         # Overriding log formatter to make sure it return a UTF-8 string

paperclip.gemspec

@@ -35,7 +35,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency('rspec', '~> 3.0')
   s.add_development_dependency('appraisal')
   s.add_development_dependency('mocha')
-  s.add_development_dependency('aws-sdk', '>= 1.5.7', "< 3.0")
+  s.add_development_dependency('aws-sdk', '>= 1.5.7', "< 3.0", *((0..33).to_a.collect{ |release_number| "!= 2.0.#{release_number}" }))
   s.add_development_dependency('bourne')
   s.add_development_dependency('cucumber', '~> 1.3.18')
   s.add_development_dependency('aruba')