Dave,
Installed the latest version 11.0.2052.0 and still receive the same issue.
Can get the Lines in with no problems, but even though the Header maybe only 6 lines, my opinion is that it gets hung up trying to calculate the Line information to update the Batch Total.
The machine is running at 100% memory usage, and then drops when the time-out is reached.
I reduced the lines in the file and processed with no issues. The lines were around 4,700 now only about 900 lines.
Thanks,
Mick