Xml export crashes Cubase

Trying to export some pieces as xml for use in Dorico, to check the new 9.0.10 xml corrections. Cubase crashes every time, leaving only an openable-but-truncated xml file, typically with just a segment of one instrumental part (same result on pieces for one, two or four instruments). Can’t export to Dorico at all now. Anyone else seen this?

MacPro 2013 6-core 3.5, OSX 10.12.3, 16Gb RAM, Apogee Ensemble