Unable to drag and drop data grid components to Visual studio form

I am using the evaluation version of the Syncfusion Essential Grid control I have the Microsoft.net 1.1 installed on my pc. I am trying to add the components for Syncfusion.Grid.dll and Syncfusion.Shared.dll to the toolbox tab in the Visual Studio designer. When I click OK, only some items such as "Folder Browser", "Grid Layout" etc are higlighted . The main ones such as "Grid Control", "GridDataboundGrid" items are all disabled and I am unable to drag and drop those into the designer form. Please help!

Check your GAC (\Windows\Assembly folder) to make sure only the 2.1.0.10 versions of the Syncfusion DLLs are listed there. 2.1.0.10 is the latest evaluation build. If this is not correct, I would uninstall and then reinstall the evaluation.