Mapotholik

I try to perform some folder backup with this old version of the software.
I backup it to my ftp server, and i set it to save three versions until deleting them the old ones. But it doesn’t deleting the old ones. I'm getting this error in the log:

WARNING:> Requested action not taken (e.g., file or directory not found, no access).
WARNING:> Deleting directory "April 25, 2006 (18.01)"...
FTP:> RMD /backup/April 25, 2006 (18.01)
FTP:> 550 /backup/April 25, 2006 (18.01): Directory not empty
WARNING:> Requested action not taken (e.g., file or directory not found, no access).

Does anyone know what can cause the software to not be able to delete old backups?

Thanks