Thank you for writing back.
I can confirm that the scenario works properly only with DateTime.Now. As a workaround, please set value to DateTimePickerElement.TextBoxElement:
In my project I referenced our latest assemblies (2011.2 11.831). However, if you do not have these assemblies at the same location I have them on my PC and at the same time you have 2010.3.10.1215 installed, Visual Studio may change the references taking the assemblies from your GAC. I hope this clarifies the case.
Please find the modified project.
I hope this helps.
the Telerik team
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