OG1,

 

Thanks for your video. Now we have some thought.

 

The PC installed silverlight 2.0 , the silverlight file browsing dialog is the 'modal' mode, which prevent user click other UI of the browser.

 

(To confirm it, please try this : Maybe the UI will be blocked even you click the 'Cancel' button on the file browsing dialog.)

 

 

So I think that is a silverlight bug.  We are trying reproduce this issue. (Now we get silverlight 4.0 works fine)

 

 

Currently you can do one of these option to get avoid that issue :

 

A - use uploader.UploadType=Flash or uploader.SetAdvancedOption(UploaderAdvancedOption.NoSilverlight, ''true'') to prevent silverlight mode.

 

B - add UploadType=Flash to url , like this http://ajaxuploader.com/demo/Large-File-Upload.aspx?UploadType=Flash

 

C - ask the users upgrade the silverlight version to 4.0

 

 

We will continue this issue, and find better solution.

 

Regards,
Terry