Hello,

I am having the same problem so I thought I would post my info. 

I did a fresh install on two different computers with Visual Studio 2008 installed with the same results.  One computer is running XP SP3 the other is running Vista SP1.  I installed the 6.1.1a community .net 3.5 package followed by the 6.1.1a Silverlight package.  I started VS2008 and created a new C# project using the C# Visual WebGUI Silverlight Application template taking the default project name. Once the project was created I tried to build the project. During the build the following error occurred:

Object reference not set to an instance of an object.

Gizmox.WebGUI.Silverlight.Packaging

 at Gizmox.WebGUI.Silverlight.Packaging.ToolConfiguration.ToolConfig.
LoadAssemblyData(Application objApplicationConfiguration)

at Gizmox.WebGUI.Silverlight.Packaging.Packager.InitProject(String strProjectPath)

at Gizmox.WebGUI.Silverlight.Packaging.Packager.InitPakcager(String strProjectPath)

at Gizmox.WebGUI.Silverlight.Packaging.MainForm..ctor(String strProjectPath)

at Gizmox.WebGUI.Silverlight.Packaging.Program.Main(String[] arrArguments)

{Void LoadAssemblyData(Gizmox.WebGUI.Silverlight.Packaging.Configuration.Application)}

 

Inner Exception: null

 

 

There is no Deployment.config file in the [solution]\Properties folder