Thanks Niall. Final question.....being a required deployment, is the expected behavior be that the hta pop-up to initiate the task sequence would only show if all content has been downloaded (I also have the TS set to "Download all content locally before starting task sequence" enabled in the deployment)?
Looks like the content starts to come down to the client only when I click the upgrade now button in the HTA but not before. I am looking into how I can suppress the pop-up until all content has been downloaded.