Problem with AjaxFileUpload control with IE7

Hi,

  I am using "AjaxFileUpload" from AjaxToolkit september 2012 release.

  When i set  MaximumNumberOfFiles="1" select file button does not work in following scenarios:

 1. I select a file to upload then "select file" button becomes hidden( Its fine).When i uploads the selected file ,select file button becomes   visible again( It is also fine),but if i click on "Select file" now it does not perform any action.

2. I select a file to upload then "select file" button becomes hidden( Its fine).I click "Remove" button to remove selected file then "select file" button becomes visible again( It is also fine),but if i click on "Select file" button now it does not perform any action.

It is happening only when i run it using IE compatibility mode ( Document Mode: IE7 Standards).

Any solutions for this?