grails record upload problems

i'm perplexing heed record upload formula grails website, i'm controlling problems. i'm controlling same formula found . here code:

    <g:form action="upload" method="post" enctype="multipart/form-data">
        <input type="file" name="myfile" />
        <input type="submit" value="upload" />
    </g:form>

and

def upload = {
    def f = request.getfile('myfile')
    if(!f.empty) {
      flash.message = 'success'
    }    
    else {
       flash.message = 'file can't empty'
    }
}

i'm receiving following blunder during runtime:

message: signature method: org.mortbay.jetty.request.getfile() convenient justification types: (java.lang.string) values: {"myfile"}
caused by: groovy.lang.missingmethodexception: signature method: org.mortbay.jetty.request.getfile() convenient justification types: (java.lang.string) values: {"myfile"}

it appears associated open configuration. open does seem injecting multiparthttpservletrequest, ask doesn't have suitable method. i only combined applications controlling grails create-app. i have run-down resources.groovy file. i'm controlling grails 1.0.3.

any assistance many appreciated. grails website creates feeling easy.