Apple Script Error in Automator workflow

I am new to this forum and I hope you all will be easy on me. I have built a workflow in automator for my mother to easily back up files to CD. I put a ask for Confirmation action at the beginning asking her to insert her backup disk. I needed her to wait until the disk spins up so after the confirmation I put a Wait for User Action-action. This woks flawlessly when I run the workflow from the automator app. But when I save as an application and run it it bombs with this error “Apple Script Error NSReceiverEvaluationScriptError: 4 (1)”. This does the same thing when I run it as a finder plug-in. I built another one with just these two actions, Ask for confirmation and wait for user action and it acts the same way. I am using 10.4.11 and obviously automator 1.0.5. Any help would be much appreciated.