Problem with warbler 1.3.1 and rake 0.9.2

Hello!

I have recently started to upgrade our server and libraries, and have tried (and failed) to bundle the default rails3 application. I believe the problem is with warbler v1.3.1 and it has some sort of incompatibility with rake v0.9.2 Any help would be greatly appreciated.

Thank you!

Steps 1 through 5 work great, and step 6a successfully creates and launches the application.

However, when I try to bundle the application into a war file using Step 6b, I get the following message:
warble aborted!
You have already activated rake 0.8.7, but your Gemfile requires rake 0.9.2. Consider using bundle exec.
/usr/lib64/jruby-1.6.3/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/runtime.rb:31:in `setup'

Create Simple JRuby / Rails Application
1. jruby -S gem install bundler rake rails warbler
2. jruby -S rails new myapp3 --template http://jruby.org/rails3.rb
3. cd myapp3
4. jruby -S bundle install
5. jruby -S rake db:create:all

6a. jruby script/rails server
6b. jruby -S warble

My environment was installed from scratch, no old libraries or applications were installed before testing the JRuby / Rails sample application:
- Linux unix 2.6.38.8-35.fc15.x86_64 #1 SMP Wed Jul 6 13:58:54 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux - jruby 1.6.3 (ruby-1.8.7-p330) (2011-07-07 965162f) (OpenJDK 64-Bit Server VM 1.6.0_22) [linux-amd64-java] - jruby -S gem list LOCAL GEMS abstract (1.0.0)
actionmailer (3.0.9)
actionpack (3.0.9)
activemodel (3.0.9)
activerecord (3.0.9)
activerecord-jdbc-adapter (1.1.2)
activeresource (3.0.9)
activesupport (3.0.9)
arel (2.0.10)
builder (2.1.2)
bundler (1.0.15)
erubis (2.6.6)
i18n (0.5.0)
jdbc-sqlite3 (3.7.2)
jruby-jars (1.6.3)
jruby-rack (1.0.9)
mail (2.2.19)
mime-types (1.16)
polyglot (0.3.1)
rack (1.2.3)
rack-mount (0.6.14)
rack-test (0.5.7)
rails (3.0.9)
railties (3.0.9)
rake (0.9.2, 0.8.7)
rdoc (3.8)
rubyzip (0.9.4)
sources (0.0.1)
thor (0.14.6)
treetop (1.4.9)
tzinfo (0.3.29)
warbler (1.3.1)