Hi All: I've seen a few threads about this, but I haven't found a resolution. I had the severe misfortune of upgrading my desktop from XP Pro to Vista Business, and have spent several days trying to get VWD 2005 and 2008 to run. Both apps were installed in XP and were running fine.

I have tried reinstalling .NET Framework 3.5 and VWD 2008, but when I try to create a new local filesystem project I'm getting the "child nodes not allowed" error when VWD tries to update the web.config file. When reinstalling I ran the VWD2008 setup from the microsoft website, redownloading everything.

I've also been trying to work against projects on several server2003 r2 servers, with the same problems (I presume the error is local, since it seems like VWD can't modify the local cache files in either case).

I have the following installed:

• .NET compact framework 1.0 sp3 developer
• .net compact framework 2.0
• .net framework 1.1
• .net framework 1.1 hotfix (kb929729)
• .net framework 2.0 sp1
• .net framework 3.0 sp1
• .net framework 3.5
• asp.net codename "Atlas"
• asp.net web matrix

Am I missing something obvious here? I'm almost ready to give up on Vista and roll back to XP Pro at this point :(

This may help:

http://www.ironspeed.com/Designer/5.0.1/WebHelp/Part_VI/Parser_Error_Child_nodes_are_not_allowed.htm

http://studihelp.de/blog/PermaLink,guid,2f46886f-c0cd-4db5-a9dc-f2dca25f0487.aspx

Also: I assume that when you say "codename Atlas" you really mean Ajax Extensions 1.0 since "Atlas" name was not used in the final release.

 Thanks...to be honest I gave up and restored my XP installation for now...too many problems with Vista :(

But, I DO mean "codenamed Atlas" because that's how it displays in the program manager (see below). That may or may not have had something to do with it.

It may have direct effect. Atlas is a pre-release. It may not be compatible with final 3.5 and VS 2008 release. Please install final bits from http://www.microsoft.com/downloads/details.aspx?FamilyID=ca9d90fa-e8c9-42e3-aa19-08e2c027f5d6&displaylang=en and don't forget to update web.config and the application according to http://www.asp.net/ajax/documentation/Migration_Guide_CTP_to_RTM.aspx

 I uninstalled Atlas and installed the version above, but, FWIW, I wasn't using Ajax in any of the websites that were related to this post.

Pre-release bits may be updating baseline .NET 2.0 as well. .NET 3.5 is an extension, not a separate framework so it relies on 2.0 as well. Thus if .NET 2.0 assemblies have incorrect version, quite a few things may get broken.

 Thanks for those comments, Mikhail. Do you see anything else in my list other than the Ajax component that looks like it's not the latest assembly?

On a related note...I keep getting prompted by Windows Update to download "Security Update for Microsoft >NET Framework,Version 1.1 Service Pack 1", but the installation fails after it downloads...could that be related as well? Should I reinstall .NET 1.1 as well? I don't have any websites that I need to support that use any .net 1.x code.

What is version number of System.Web.dll in Windows\Microsoft.NET\Framework\v2.0.50727? It should look like 2.0.50727.abcd. Right click on assembly and choose Properties then Detail to get the version info.

 Thanks Mikhail: It's 2.0.50727.1433