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Nov 09, 2006 11:01 PM|LINK
I found a combiniation of thing fixed my sys is undefined issue. I have asp.net ajax beta 2 installed and after creating a AJAX web site i began getting the error. After looking at this thread two things resolved my issue...
initally the web.config had this line
I changed it to (Notice the capital R. I have no idea if this was it but doing it worked for me)
also I had to have this in there once I turned authentication on.