I did not notice those script errors, but I wasn't looking for them. I will take your recommendation and act on it. Some progress was made in troublshooting the issue.
I took a backup of the database and the site and restored it on staging servers. Duplicated the problem. The oddest thing was that the "Icon" image a user had put into a DnnForge News Module Article, appeared on the public pages, yet displayed a red "X" when logged in as an Administrator. As host, the image displayed.
I recalled seeing something, now unrelated, in the Event Viewer about a general exception in the following "RawURL"
/portal/DesktopModules/DnnForge - NewsArticles/ImageHandler.ashx?
Based on that I figured I would remove the article. I did, and the problem was "solved". I quote "solved" because I still don't understand the where's and why's of what went wrong. And how removing the article "fixed" the situation.
I appreciate your response and hope to continue this thread so more light can be shed on DotNetNuke. This is my first major experience with it and I recomended it at my company, so I would like to see it succeed of course.
I'll report back anything I find based on your recommendations.
Thanks again.
Tom