This happens, when Handy Backup can′t get access to the tasks and log files. Please find the Handy Backup Application Data folder (Start -> Run %APPDATA%/Novosoft Handy Backup) and make sure that none of its subfolders doesn′t have the “Read-only” attribute.
See also: FAQ | Program Installation and Usage:
⇒ How to configure tasks for automatic execution one after another?
⇒ How to back up data that requires administrative privileges