Busy State Indicator Behavior

How do I use something like this for my Silverlight Blend/SketchFlow project?

Start by dropping the compiled assembly (dll)
in the correct folder:

\Program Files (x86)\Microsoft Expression\Blend 4\Libraries\Silverlight\v4.0

This is example is for Blend 4 and SL4 (but you can do the same for other versions)

Start blend and after a while you'll find the behavior in the behaviors tab in Blend, then you can simply drag it onto a control.

Hi. I can't find any dll in the downloaded package. Would you be able to help me?

Same Problem here. Please upload the compiled DLL or a Solution Package.

Thanks!
Lets give it a shot

Hi, great feature, but I have one problem. The overlay never gets disabled, debugging the code seems that when trying to find the added BusyIndicator in the LogicalTree its not found. So it cannot be removed. Any idea what could be causing this behavior?

This is the code in BusyIndicatorBehavios.cs that fails:
var grid = (Grid) LogicalTreeHelper.FindLogicalNode(hostGrid, "BusyIndicator");
Debug.Assert(grid != null);

Thanks! 

Help, how compile the dll?