Bug with backups

Hey!

I set up Ready!Backup, set up Dropbox keys. One time i pressed “Backup Now” everything was ok (6000+ files in “full” and database). Then i deleted all files and tried again. The backup has begun, completed about 10% of progress bar and showed a warning
PCLZIP_ERR_INVALID_PARAMETER (-3) : Invalid variable type ‘NULL’ for p_filelist
The backups was created in the list but when i’ve tried to download database i saw 404 error and when i’ve tried to download “full” file – it had only 500 files.
In log File i have:
“create file – /home/xxxxxx/public_html/wp-content/upready/backup_2013_11_21-17_04_57-full_id1.zip
add 500 files, total size 6 845 445 byte
PCLZIP_ERR_INVALID_PARAMETER (-3) : Invalid variable type ‘NULL’ for p_filelist”

Ben, I need help 🙂

http://wordpress.org/plugins/ready-backup/