If you attempt create a new project with the wizard from Project -> Check Out... and you lose your connection while filling out the wizard, it loses all your project information. You have to go through the whole process again. It ought to save all the project info so you can attempt an update later, or at least offer you a "retry".
(using SmartSVN Professional 7.6.3 on linux)
(using SmartSVN Professional 7.6.3 on linux)