That sounds like an older bug, are you sure you using the latest service release?

Installed NetAdvantage_Silverlight_20103.2159_SR

Is there any after that?

That looks like the Brushes.xaml file is in a project that either A) does not have a reference to the required DLL or B) the xmlns declaration at the top has the version number in it and it can't find that particular version.

Little closer to the issue

I deleted the Reference that I had for the XamGrid

Removed the xamgrid from the page

Added a new one

It started giving error in the Styles file that

Error 6 Could not load file or assembly 'InfragisticsSL4.v10.3, Version=10.3.20103.2159, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb' or one of its dependencies. The system cannot find the file specified. C:\l\Assets\Brushes.xaml 1 1 Projename

I did a quick test

Any of my new application work well(Bugs are fixed)

But for old applications the Service release isnt getting applied

I had most of the places with code

 private void XamGrid1_CellExitedEditMode(object sender, Infragistics.Controls.Grids.CellExitedEditingEventArgs e)
        {
            e.Cell.Row.Cells["test"].Refresh();
            //XamGrid1.InvalidateData();
        }

The InvalidateData is used in older apps and the new app that I created today I dont need to give InvalidateData for any cell change

How to resolve this

Why isnt the service release getting applied for the existing apps?!

It is quite strange

It does not happen with the sample I have created but it does happen with my actual application

Anything that must be missing?

Both have same type of controls

I am going to need a sample showing this behavior.