Error: 'Sys' is undefined

Apr 16, 2009 at 11:51 PM
On page 145 of the NerdDinner pdf and getting this error when trying to implement Ajax call.
From googling it looks like this is a common problem with not sure fire solution. 
I am running this on the built in web server with Visual Studio on Vista Ultimate.

Any ideas on how to troubleshoot/fix?
Apr 17, 2009 at 12:48 AM
Make sure you've included the script references to MicrosoftAjax.js and MicrosoftMvcAjax.js shown on page 141.
Nov 4, 2009 at 5:19 PM

I am getting the same symptom.  In my specific case, the AjaxLink works perfectly when using the development web server but fails when I access the same physical site with II7.  What could be different between these web hosting tools.