If the form is showing up on the Sharepoint server in Explorer view,
then the problem lies within the realm of the Sharepoint server. Try
reforming your post and posting it to one of the Sharepoint
discussions. You're more likely to get a correct answer there. :)

That said.....

Have you tried creating a new "standard" view of the list? A new
"DataSheet" view? Does the process of creating the view appear to work
normally? Are all the form fields you've promoted showing up? Have you
checked all the possible settings before saving the new view? Do
either of those new views work?

Have you verified that the library's "General Settings" are correct?

When you open an item (from explorer view, since this is all that
works), does it look right?

Have you tried publishing the form to a new form library? Does it
behave any differently?

Have you tried publishing the form to a new form library without
disabling the "File/Save" feature? Does it behave any differently?

Good Luck...