I have a task which is defined to do a full image backup on weekdays. Its backup location is defined to keep up to 5 full image backups. The task correctly detects when the backup location has exceeded 5 backups. However, when it tries to delete a backup, it reports the error mesage "Archive is invalid or its type is unsupported." This is certainly a bug. I have another task, which is defined to create a full file backup after every 6 differential backups. The backup location is defined to store up to a maximum of 8 backups. When this task runs, it correctly detects when it has exceeded 8 backups, and CORRECTLY deletes/consolidates old backups so that it only keeps 8 backups around. I've read other threads where reinstalling ATI 10.0 has helped other folks, but I'm somewhat skeptical that this will help me, since backup location cleanup does work for my second task (but not for my first task). Reinstalling doesn't seem to make intuitive sense, given that backups are working properly, just not cleanup. Anyone have other suggestions? Has Acronis acknowledged this to be an issue?