Well, I have just now had a clue in determining what is the problem here.
The current version of DotNetNuke is version 4.3.6 . This is the version I have been attempting to install and serve via Cassini during these last two days.
All my efforts have been met with the problems describe above, in my posts before this one.
So... I went back and picked up an old copy of DNN 4.0.2 . I knew that at one time (circa May 2006) I was using this DNN version 4.0.2 with whatever version of Cassini was available back in May 2006.
Using the current Cassini Web Server (v. 2.0.6 I believe) and I used the *old* version of DNN v 4.0.2 .
And .. it worked.
So it is safe to say that problem lay within the most recent versions of DNN, specifically 4.3.6 .
I'm going to mention this on the DNN forums, since Cassini is hugely popular for those of us who enjoy DNN alongside Cassini on our XP Home machines.
EDIT: The thread at DotNetNuke can be followed here: (
http://tinyurl.com/va3vt ) -- seems to be confirmed bug.
Cassini Experts, I am happy to assist in fixing this problem for the benefit of all. I already have a few hunches and clues, if you wish to hear them. (file attachments would be required, I can be contacted at memorex_1 @ graffiti . n e t )
And thanks again !!!