I have experienced the same issue. Absolutely nothing wrong in DEV, but importing into QA results in "Error in transport of End Routine" or "Error in transport of Start Routine".
I found this only happened if I had looked in the start or end routine and made no entry.
I did a comparison between Dev & QA and it did show there was a difference, even though I had made no entry in the Start/End Routine. There appears to be a bug.
As a workaround I entered a comment in the Start/End routine and then the transport imported successfully.