FVS2008 SP1 with .NET 3.5 SP1 breaks apps using ASP.NET AJAX

May 9, 2009 in .NET, Code, Rants, Work

I recently upgraded my VS2008 to Service Pack 1 which was a combined update to .NET Framework 3.5 also to SP1. I did update to try my hand in ASP.NET MVC architecture.

I am working on a couple of projects that are using ASP.NET AJAX these days. And after doing this update I started noticing strange issues in pages using AJAX extenders.

First I noticed that the pages containing the AJAX extensions were throwing strange errors. They were usually in the form of “Cannot set value True for property enabled”. This caught me quite by surprise and made me review the HTML over and over.

Once I was sure that there was nothing wrong in the way that the properties were set, and these were pages that were working perfectly, I realized something would have happened after applying the service pack. But I could not find a lot of useful information directly documenting this issue. Most of the issues were reported on the user controls behaving in a similar manner.

After quite a bit of Googling and putting 2 and 2 together I managed to solve it by applying ANOTHER hotfix. This is where I found most of the info from: https://connect.microsoft.com/VisualStudio/feedback/Workaround.aspx?FeedbackID=361826

This is the hotfix that solved it for me: http://code.msdn.microsoft.com/KB967535

Hope this helps someone out there to avoid the mess I was in which resulted in a few hours worth of work just before a major deadline!

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