Hi
Amirreza,
Thank you for writing us.
Currently there is an issue with adding a Telerik Scenario in a project sub-folder. We are working on fixing the issue and until the end of this week we will release our VSExtensions.
Some of our customers swapped a normal form into a RadForm as a workaround of the issue.
Please let us know if any further assistance is needed.
Regards,
Dyanko
Telerik