the warning in the WinGrass-start-up-script for this issue was recently changed for grass6.4.1
see:
http://lists.osgeo.org/pipermail/grass-commit/2010-September/014472.html
the error in the module g.mapset itself seems not to be fixed.
best regards
Helmut
___________________________________________________________
Neu: WEB.DE De-Mail - Einfach wie E-Mail, sicher wie ein Brief!
Jetzt De-Mail-Adresse reservieren: https://produkte.web.de/go/demail02