One more item ... I went into the Admin Console, verified that the Publishing Engien was running (it was) and went into the Site Assistant from there.
I got an http Error 500, Internal Server Error - The website cannot display the page.
By the way, I am running this under MS Server 2008 IIS.
Thank you for your posts.
The Error code 500 has been previously reported with FileMaker Server 10 running on Windows 2008 (64 bit) and IIS7. At this time, you will need to set the "Enable 32-Bit Applications" property in IIS7. Our Development and Software Quality Assurance (Testing) departments are aware of this issue, and no additional information is available at this time.