Thank you for reaching us out.
Though you are referring to a thread dating back four years ago. Thus I would like to have some additional details on the exact issue you are facing.
If it is related to the automatic update which displays a message currently here is what you could do. Please download and install manually the latest Service Pack edition 2017.2.824 from your Telerik account here
. This will be required once due to the fact we have upgraded our licensing services.
In case this is not what you are experiencing please elaborate more on the error you have faced. Thanks in advance!