Hello Giovanni De Lazzari,
Have you tried setting the TemporayTargetFolder to point to a folder inside the AppData folder? Instructions on how to enable writing permissions to the AppData folder for a GoDaddy hosted site can be found here.
the Telerik team
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Public Issue Tracking
system and vote to affect the priority of the items.