Uncaught TypeError: Cannot read property 'id' of undefined

[Vuyiswa]

Good Day

I have posted this , but i could not reply to that post, so that is why i am starting a new post . I am using RadAsyncUpload which that is ajaxified. in my Page i have Ajax-toolkit Controls. When i use Telerik Ajax-manager i get a problem. i have attached a link to a Small project that i created that has the problem.

Link to a Problem Project

Thanks