Modified ArcGIS.Client.Toolkit library now getting an error related to version.

[RahulRahul]

I modified overview map functionality by modifying ArcGIS.Client.Toolkit 2.0 downloaded from codeplex. If I use this assembly in Silverlight Application everything works as expected. However I get following error if I use the same assembly in Sharepoint command.

I am looking for some direction to resolve this.

Any help is greatly appreciated.

Thanks,
Rahul

[DominiqueBroux]

We don't see your error since your image seems to be private.

[RahulRahul]

Hi Dominique,

Sorry! I have attached the image along with this post.

Thank you for your quick response.

[dotMorten_esri]

The viewer was built against the official version of the toolkit and you can't just replace that with a newer version without confusing the viewer.
Your best option is to move your modified control into its own new assembly (with a new namespace) and add that separately to the viewer template but leave the original toolkit in its original state.
For any viewer specific questions on how to do that, please use the beta community forums.