go to post Colin Brough · Jul 18 For the sake of having an "accepted" answer on this post: we never got to the bottom of what was going on, and scrubbed and reinstalled Ensemble. Thanks for suggestions - some useful learning, even if we were never able to get to the bottom of what was going on.
go to post Colin Brough · May 18 For completeness / in case others come across this, turned out the XML export file was being corrupted during transfer between the two systems. It was a CR/LF corruption - in our specific case CR/LF was getting converted to CR/CR/LF !!Highlighted that DTL's specifically appear sensitive to CR/LF changes - we've subsequently come across the same #6301 error loading DTL's get CR/LF modified in another way (we're still tracking that one down, though suspicion currently is with git...)