Multiple errors on launching msfrpcd

[jeffs at speakeasy.net (jeffs)]

Get these errors when trying to run msfrpcd on msf v3.3-dev on BT3.

Any help much appreciated.  Obviously something to do with ruby but I'm 
drawing a blank here.

=======================================

bt framework3 # msfrpcd -P thetestpassword
[*] XMLRPC starting on 0.0.0.0:55553 (SSL)...
[*] XMLRPC initializing...
[*] XMLRPC backgrounding...
/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_require': no such file to load -- msf/core/rpc (MissingSourceFile)
        from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `require'
        from
/pentest/exploits/framework3/data/msfweb/vendor/rails/activerecord/lib/../../activesupport/lib/active_support/dependencies.rb:510:in
`require'
        from
/pentest/exploits/framework3/data/msfweb/vendor/rails/activerecord/lib/../../activesupport/lib/active_support/dependencies.rb:355:in
`new_constants_in'
        from
/pentest/exploits/framework3/data/msfweb/vendor/rails/activerecord/lib/../../activesupport/lib/active_support/dependencies.rb:510:in
`require'
        from /pentest/exploits/framework3/plugins/xmlrpc.rb:10
        from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_require'
        from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `require'
        from
/pentest/exploits/framework3/data/msfweb/vendor/rails/activerecord/lib/../../activesupport/lib/active_support/dependencies.rb:510:in
`require'
        from
/pentest/exploits/framework3/data/msfweb/vendor/rails/activerecord/lib/../../activesupport/lib/active_support/dependencies.rb:355:in
`new_constants_in'
        from
/pentest/exploits/framework3/data/msfweb/vendor/rails/activerecord/lib/../../activesupport/lib/active_support/dependencies.rb:510:in
`require'
        from ./lib/msf/core/plugin_manager.rb:51:in `load'
        from ./lib/msf/base/s