CobianSoft

As a service you cannot install it under the local System account. Install it as a regular account.

Just uncheck "Save empty backups"

Hola

No, no es posible. Sinn embargo si tienes marcada la opción de Ejecutar los respaldos perdidos, entonces la tarea será reinnciada (desde cero).

Check if the zip file has the archive attribute changed when files are added.

You need to add a manual destination.

Change the timeout in the Options-Advanced tab

Are you using zip compression?

No. That has been the behavior since 2007.

Change the timeout in the Options-Advanced tab