Backup to Dropbox not working

I am attempting to back up my files to Dropbox but it’s not working. The file size is 142 MB and I have about 10 GB of free space in Dropbox. I’m not getting any error messages but there are no backups being created in Dropbox.

Here is the log file:

20:46:44.48 0.20sec 32.75MB details —– Initiating master send function. Post-send deletion:
20:46:44.48 0.20sec 32.76MB details Created fileoptions lock file /home8/virtucy0/public_html/thefoodcop/wp-content/uploads/pb_backupbuddy/fileoptions/send-3y5dt5ipgfvu.txt.lock with ID: 54ea4034754b88.52603063.
20:46:44.48 0.20sec 32.76MB details Initializing destination.
20:46:44.48 0.20sec 32.76MB details Loading destination init file /home8/virtucy0/public_html/thefoodcop/wp-content/plugins/backupbuddy/destinations/dropbox/init.php.
20:46:44.48 0.20sec 32.78MB details Destination init loaded.
20:46:44.48 0.20sec 32.78MB details Initialized dropbox destination.
20:46:44.48 0.20sec 32.78MB details Applying destination-specific defaults.
20:46:44.48 0.20sec 32.78MB details Applying global destination defaults.
20:46:44.48 0.20sec 32.78MB details About to load Dropbuddy library…
20:46:44.48 0.20sec 32.80MB details Dropbuddy loaded.
20:46:44.48 0.20sec 32.80MB details Dropbuddy object created.
20:46:44.67 0.39sec 33.83MB details Authenticated to Dropbox.
20:46:44.67 0.39sec 33.83MB details Dropbox limitation estimated to be max transfer size of 99MB based on PHP memory limit of 256MB & current loaded WordPress plugins.
20:46:44.67 0.39sec 33.83MB details Looping through files to send to Dropbox.
20:46:44.67 0.39sec 33.83MB details About to put file backup-www_thefoodcop_com-2015_02_22-full-g7xmhoa38t.zip (142.26 MB) to Dropbox (v1).

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