Online Backups Fail – Locals work

I have never been able to make the online backup work.
Finally made the local backup work after deleting 2 large files from an old backup folder inside the site.

Online Backup for WordPress Plugin Version 3.0.4
WordPress Version: 3.6 (standalone)
PHP Version: 5.2.17
Server Software: Apache
MySQL Server Version: 5.1.73-log
MySQL Client Version: 1.0; MySQL Packet Size: 10 MiB
Memory: 256M; Post: 8M; Upload: 40M; Timeout: 50000
Memory Changable: Yes; Admin Cache Size: 129.97 KiB
Status: 1 row, 15.17 KiB packet size, 120.55 KiB cache freed, 18.87 MiB memory used
Capabilities: gzdeflate php5hash DES AES128 AES192 AES256

The final error message reads: The activity failed: Attempt to write to file /homepages/22/d214145276/htdocs/www_tracktown/wp-content/plugins/wponlinebackup/tmp/backup.indx.0beb80fe794d6a3f1a6389574205cd396b9c5ff6.rc.php only partially succeeded. Only 0 of 0 bytes were written. (146579 bytes already written.) PHP last error: No error message was logged.

Any thoughts?
Tim