2013.1.80.1 - Dont work with VS2012

Please help to fix that issue with compatibility for WindowsForm library.
That is what I am doing to add this library on ToolBox :

• Right click in the toolbox
• Select "Choose items..."
• Press "Browse..." under ".NET framework components
• Select the OxyPlot.WindowsForms.dll assembly (note that there are versions for both .NET 4.0 and .NET 4.5)
• The "Plot" control should appear under "OxyPlot.WindowsForms Components" in the ToolBox
  

and I got a error like that :
There are no components in 'xxx\OxyPlot.WindowsForms.dll' that can be placed on the toolbox.

please help.
Johnny

https://oxyplot.codeplex.com/discussions/453979