Incremental FTP can't open Base File. Error 72 (not supported)

Discontinued Products Comodo Cloud
1

Comodo won’t do incremental backup over FTP with macros enabled. It is a server backup 105 gigs. Transfer went fine, connection is fine. Here is the log.

25.11.2013 22:27:18 Creating New Backup…
25.11.2013 22:27:18 Deduplication is disabled because selected destination doesn’t allow random reads
25.11.2013 22:27:19 Checking if file ftp://98.244.100.70:21/backup_inc_files.cbu can be used as backup base.
25.11.2013 22:27:28 Using as base ftp://98.244.100.70:21/backup_inc_files.cbu.
25.11.2013 22:27:28 Opening backup file ftp://98.244.100.70:21/backup_inc_files.cbu
25.11.2013 22:27:29 Unable to open backup base!
25.11.2013 22:27:29 Error Occurred
25.11.2013 22:27:29 Backup failed with code 72 (Not supported).

Any ideas?

2

What is the name of the backup? You say that it has macros enabled, but “ftp://98.244.100.70:21/backup_inc_files.cbu” doesn’t have any macro in it.
A backup with macro should look for example like this: ftp://98.244.100.70:21/backup_inc_files_|DATE|_|TIME|.cbu