On my masterpage, I have an ImageButton. I have a page in the "Administrators" folder that uses this masterpage, which is the page directed to after a user in the role "Administrators" logs in, and the button works fine there. I have another page in the "CallCenter" folder that uses the same masterpage, which is the page directed to after a user in the role "CallCenter" logs in, and the button does not work. I set a break point on the Click event for this button, and the breakpoint is not hit.
I looked at the page source in both instances, and in the instance when the button works, the button is rendered as:
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