I am having similar problem. I have Infragistics 8.1 version. I tried everything mentioned in this post and yet no results. Please help.

Deleting and adding the folder worked for me.  I have been looking for a way to fix that for a LONG time now.

Thanks for the information!

<Extensibility xmlns="http://schemas.microsoft.com/AutomationExtensibility">

<Name>Microsoft Visual Studio</Name>

</HostApplication>

<Name>Microsoft Visual Studio</Name>

</HostApplication>

<FriendlyName>Application Styling Configuration Dialog</FriendlyName>

<AboutBoxDetails>For more information about Application Styling, please see the Infragistics, Inc., website at\r\nhttp://ko.infragistics.com\r\nCopyright (c) 2007 Infragistics, Inc. All Rights Reserved.</AboutBoxDetails>

<Assembly>Infragistics2.Web.ApplicationStylingConfiguration.v8.2.dll</Assembly>

<LoadBehavior>0</LoadBehavior>

<CommandLineSafe>0</CommandLineSafe>

</Extensibility>

jazpur said:

Any solution for this ? My addin-file contains <Version>9.0</Version>.

I also manualy copied the files from C:\Program Files\Infragistics\NetAdvantage for .NET 2008 Vol. 2 CLR 3.5\ASP.NET\Application Styling Configuration

To My Documents\Visual Studio 2008\Addins

Still there is no Application Styling Conf Available in VS.