After spending too much time on trying to figure out why my upload was not working I finally discovered something rather surprising.
Turns out that if you have the following single line of code in your master page. RadUploads will not work.
|Protected Sub Page_Init(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Init
| Me.ID = "Master"
For some unknown reason naming the master page causes everthing to fall apart. Comment out that one line and everthing works.
I don't know if this is telerik bug or microsoft.
It sure is odd.
Thanks ... Ed