If you ssh into the hudson box, cd into the folder for the project and run the build command from there, what happens?
> --
> You received this message because you are subscribed to the Google Groups "webrat" group.
> To post to this group, send email to web...@googlegroups.com.
> To unsubscribe from this group, send email to webrat+un...@googlegroups.com.
> For more options, visit this group at http://groups.google.com/group/webrat?hl=en.
>
> running on Ubuntu 10
> jre 4.4
> Ruby is 1.8.7 REE installed via RVM
>
> not sure how to run "build command"
Well what command have you configured hudson to run?
What user does hudson run as? Does he definitely have REE in his path?