'warble compiled war' does and include the compiled *.class files in war

I am using warble to deploy a rails 3 application to tomcat. I can
create the war and deploy successfully with ‘warble war’. When I use
‘warble compiled war’ the war file generated has the modified *.rb files
(which load the .class files’) but the corresponding *.class files are
missing in the war. Is there some configuration I am missing.

warbler 1.3.0
jruby 1.6.1 (1.8.7)
rails 3.0.3
OS: Ubuntu 10.04


run warble compiled war with --trace, there might be some error in
building war which causes deletion of class files.