Uploading to Drobox error

Ok it seems that I can’t upload to Dropbox anymore as it needs much more memory. But shouldn’t the task stop eventually if it can’t upload? It keeps on continuing. I have a suggestion. I have also set the job to upload the archive to SugarSync. Now just because it hangs up while uploading to Dropbox and aborts, it should instead stop trying on Dropbox and continue uploading to Sugarsync and finish the job. If one upload fails, it should continue uploading via other mentioned methods.

One more error. After the dropbox error, the job didn’t stop and I had to manually stop. And when I aborted, after the page refreshed the full page gave this error:

Warning: unlink(/tmp/.backwpup_-2014082332/.running) [function.unlink]: No such file or directory in /<pathname>/wp-content/plugins/backwpup/pages/header_backwpup.php on line 65

Warning: unlink(/tmp/.backwpup_-2014082332/.static) [function.unlink]: No such file or directory in /<pathname>/wp-content/plugins/backwpup/pages/header_backwpup.php on line 66

Warning: file_put_contents() [function.file-put-contents]: Filename cannot be empty in /<pathname>/wp-content/plugins/backwpup/pages/header_backwpup.php on line 67

Warning: fopen() [function.fopen]: Filename cannot be empty in /<pathname>/wp-content/plugins/backwpup/pages/header_backwpup.php on line 70

Warning: feof(): supplied argument is not a valid stream resource in /<pathname>/wp-content/plugins/backwpup/pages/header_backwpup.php on line 71

Warning: fgets(): supplied argument is not a valid stream resource in /<pathname>/wp-content/plugins/backwpup/pages/header_backwpup.php on line 72

Warning: ftell(): supplied argument is not a valid stream resource in /<pathname>/wp-content/plugins/backwpup/pages/header_backwpup.php on line 78

The last 3 lines kept on repeating througout the page and page keeps on loading. Though viewing the jobs page again shows no error and the task is shown as stopped.