What is the edition of the Visual Studio 2012 that you are using? Keep in mind Telerik Reporting supports only Microsoft Visual Studio 2010 and 2012 (Professional
Editions) as described in the System Requirements
If you are using one of the supported editions of Visual Studio, then make sure that Telerik Reporting installs properly by following the steps in the Telerik Reporting Item Template is missing
Have you tried the new visualization options in Telerik Reporting Q2 2013? You can get them from your account.