I thought so as well. But I create that installer just as I do the original, and it works fine. Our software is simple, I basically stop web services, move old files and replace with new ones, run a SQL script, and restart the web services.

Its as if its not starting the web installer and downloading all the file pieces from the server, but I believe its setup correctly as it grabs the initial web installer after running the wupdate.exe.

GUID and everything seems to be detected properly as the wupdate detects there is a new version available for download.

Anyone familiar with this and willing to help? I'd compensate for your time.