LoadError problem when running an rb file within Eclipse

[aidy]

Hi,

I have added the RDT plug-in for Eclipse. I have associated the Ruby
interpreter with my environment
Q1. Why do I 2 interpreters: 'ruby' and 'rubyw'?

I try to run an rb file, and I receive this error:

'C:\ruby\bin\rubyw.exe: No such file or directory --
/gbahes75/Projects/SAFS_&_RRAFS/ruby_poj/XML.rb (LoadError)'

Although my file (XML.rb) is definitely in my Ruby project.

Thanks

Aidy