So I don't seem to get the out of memory error now, but then i get other errors.
I have finally gotten to the upload stage, and it goes thru the upload process, then get the attached error with the details here:
<?xml version="1.0" encoding="UTF-8"?>
<Error><Code>XAmzContentSHA256Mismatch</Code><Message>The provided 'x-amz-content-sha256' header does not match what was computed.</Message><ClientComputedContentSHA256>2664c0769026fb06606e7429b4016e15d5e0b3bd6573bf6b54a992c0782c6441</ClientComputedContentSHA256><S3ComputedContentSHA256>9629a7f40d2ff4032da027bc06a687a595a955c9a3fc7ee92e18b70cfa6f16fb</S3ComputedContentSHA256><RequestId>A936C3C52C7CBBB5</RequestId><HostId>y+j5ekqofajWj4iakUNjCbqumj260+XIdwQI0t8TuRnGAtGoS5yRrNOgaItPJArgQV7YftE4qwU=</HostId></Error>