Atlas not working with the presence of a custom form control

hello.

though i really don't know the control you're using, i'd say that the problems might be related to the fact that ATLAS is supposed to intercept all the postback actions of the page.
It should still be able to do that if all other postbacks work, right? Maybe not. I really dont know enough of how Atlas handles postbacks. Maybe some of the Microsoft guys on here could enlighten us?
Yes,I have the same problem,and when I use FreeTextBox control.and also,other costom controls will show "Assertion Failed: elements in children collection should always have nodeType = 1Break into debugger?" message included in UpdatePanel.How can you for it ?