Hi Alex,
I just read your other posts again and I found a little strange that when you double-click on the error message it shows the weird "vti_*" messages.
Do you by any change have a folder named
[Your project]/_vti_cnf
or something that resembles that either in the source folder or in the destination folder?
If you do, one idea would be to delete all its contents because it can be something related to FrontPage extensions.
Did you try to publish to another destination folder as well?