Even when file backup task fails in error, a backup file is created and remains in the destination folder.
Then, since incorrect backup file remains, incremental backup chain continues to be created from this incorrect backup file.
This is an known issue.
When file backup task fails in error, please manually delete the backup file created at the time/data.
When you double-clicked on the backup file, since the operation of Explorer was involved, please log off / on the system and delete the file.
- ActiveImage Protector 2022