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Making a .msi installer now works with WiX 2.0.5805.0 (the file format had been changed since 2.0.4221.0 as previously tested).
getGraphicsEvent() did not return onMouseMove events while a mouse button was depressed.
Rscript -e (and Rterm -e) failed on Vista because the MSCVVCRT function 'tmpfile' is broken on that platform.