Problem calling Data management Tools.tbx

Hi to all,
i have developed a python script who make this call

arcpy.AddToolbox("C:\\Program Files (x86)\\ArcGIS\\Engine10.2\\ArcToolbox\\Toolboxes\\Data Management Tools.tbx")

I have created then a ToolBox with this script. I have to call this toolbox from a Product developed with C# and ArcGIS Engine single use (no extensions) ver. 10.2.1
This product have toc , map control and toolbar AddData button

The toolbox works without problem but when, after running toolbox, i press the AddData Button the system crash and i have an error , see the attached image.

The toolbox works good for example in arcmap ( arcview version ): it can be a license problem adding Data Management Tools.tbx with ArcGIS Engine ?

Any suggestion to give me ?

Thank you

GP

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