Hello... any answer........?

Please, we need help... :(

By the way, I update you about the situation: yesterday we managed to solve the issue of the italian user by ourselves. The problem was Microsoft Silverlight... that user didn't have it installed on her PC with IE. As soon as she installed and enabled it, she managed to upload files and the TaskError disappeared.

 

But we still can't solve the issue for the two US users... they are getting the same error that the italian user was getting: "TaskError: FILENAME, undefined, onunload", where this is the result of a JavaScript alert that we put inside the OnTaskError function and where we chose to show: 1) the type of error; 2) the file name; 3) the error message; 4) the reason message.

And this even after having installed and enabled SilverLight on their IEs (version 9).....

 

Please note that:

 

A) If they try to upload the same file in the TestUpload page (the one we set up with your help), the upload is succesful;

B) The page where they are trying to upload the files is different from the one used by the italian user, and the difference is that the italian user was using the Uploader inside a new Browser window, while the US users are using the Uploader inside a ModalPopupExtender of the AjaxControlToolkit.