download asp ajax toolkit 3.5 ( you will notice it shows 3.5.0.4 and talks about version 4 in your browser),
remove all dll from your project
remove component in palette to make sure you are not using old ones
add it again (browse to the ajax dll) and add all object, it would happen you change version of your Ajax toolkit.
in that version scriptmanager does not exist anymore, instead you have
ToolKitScriptmanager, drag one and you won't get the error anymore. (make sure you only have one, clear all existing in master page or other)
asyncFileUpload "Ajax Control Toolkit" postbackAsyncFileUpload bugAsyncFileUpload Server-Side events problem"AJAX .NET " " "Ajax Control Toolkit"
fabsurf
Member
8 Points
4 Posts
Re: Cannot get Asyncfileupload to fire UploadComplete event... :(
Nov 19, 2010 02:52 PM|LINK
Had the same issue.
asyncFileUpload "Ajax Control Toolkit" postback AsyncFileUpload bug AsyncFileUpload Server-Side events problem "AJAX .NET " " "Ajax Control Toolkit"