Automator

I'm working on a Hazel filter to automatically add URLs stored in .webloc clipping files to pinboard.in
I've got this working as an Automator workflow that extracts the URL from the .webloc and then uploads it. Trouble is when I hook it up to a Hazel rule for .webloc files it fails. I _do_ get Growl notifications about the failure. But there's nothing useful in the console - even if I turn on debug mode in Hazel.
Any way to get more information about the failure?
I've got this working as an Automator workflow that extracts the URL from the .webloc and then uploads it. Trouble is when I hook it up to a Hazel rule for .webloc files it fails. I _do_ get Growl notifications about the failure. But there's nothing useful in the console - even if I turn on debug mode in Hazel.
Any way to get more information about the failure?