Not working for me too... Tried most simple install, removed install folder (quickstart itself offered to install storefront custom data), admin is working, but error with VM categories on frontend. Tried joomla update, virtuemart update, unpublish/publish categories and products in VM, rebuild main menu, still same problem:
http://gk.lazacom.com/Any idea? All this because I have problem with VM products module on another place:
http://aquaplan.lazacom.com/so tried to install quickstart and compare files... But both seem to be broken.