Receiving the "Exception occurred during EF batching client. Problem occurred executing EF submission. A task was canceled."

My attachment is only 1100 kb! 

I also tried deleing the EF and  'renaming' the attachment to a much shorter description as someone else suggested. Cleared EF, rebooted, etc etc etc. 

STILL NOT transmitting! I have much larger attachments for other clients to transmit, than this tiny thing!

HELP!?!?!?!?!