Commented Issue: Multivalue control TFS 2012 [33111]

Hi, I would like to know if will be an update regarding "MultiValueControl.wicc" and "CodePlex.WitCustomControls.dll" for TFS 2012? I tried to add a multivalue control in TFS 2012 and I got the below error:TF400939: The custom control type 'CodePlex.WitCustomControls.MultiValueCustomControl.MultiValueControl' does not implement the IWorkItemControl interface or is compiled for a different version of Visual Studio. Thanks and Regards.
Comments: ** Comment from web user: SAAMalusare **

Hello,

I am trying to create server side event handler for TFS 2013, I have followed the code from http://exsertus.wordpress.com/2013/09/19/tfs-server-side-event-handlers-develop-deploy-and-debug/
The code builds successfully on .Net 4.5.1, after successful build I have kept the .wicc file & .dll file under 'C:\ProgramData\Microsoft\Team Foundation\Work Item Tracking\Custom Controls\12.0' location.
but I recd. error "__TF400939: The custom control type 'FPLWIT.FPLWITID' does not implement the IWorkItemControl interface or is compiled for a different version of Visual Studio.__" on my WIT.

kindly help on this issue.

Thanks,
Suhas