Backup Error

Well done on such a great application!
I found posts stating there is an issue with incremental and differential backups with multiple directories selected. I have gotten the same error with a complete backup as well.
Error:
move file error
S:\AED\Backups\AED_@20091103.7z.tmp
S:\AED\Backups\AED_@20091103.7z
Cannot create a file when that file already exists.
System error:
Unspecified error

Settings:
[Test]
BackupLocation=S:\\AED\\Backups\\AED_@@YYYY@@MM@@DD@-@hh@@mm@.7z
Locations=|Z:\\General Documents\\Steve G\\QM Stuff|Z:\\General Documents\\Steve G\\Possible Tenders
Function=Complete
Format=7-Zip
Ratio=5
IsPass=0
Rules=
Type=Backup

Hope this info helps... Is there a work around I can use for doing this??
Cheers