I tried your suggestion; unfortunately, I'm getting the same results --

 server closed connection without sending any data back
[download]

What's somewhat odd (not entirely, I guess) is that the above snippet works perfectly when trying to push files of a smaller size, e.g. 50MB -- it's only happening with larger one. I will be trying the commenting out idea suggested by you. Is there anything else to try if that fails too? Thanks for all your help -- really appreciate it.