Firstly I want to apologize for the inconvenience caused. We fixed the problem in our templates. The fix will be part of the next Q3 release of the product.
Actually you could workaround the wrong behavior by adding the following line in the General.ttinclude
template within the InitializeLanguageDependentTypeMap
The template is located under the following path [OpenAccess_Install_Dir]\ dsl2010\CodeGenerationTemplates\CSharp\Includes
Hope that helps.
the Telerik team
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