There is a bug in VM2.0.2 on some setup, it's working fine for me thoufg
Try to have debugging enabled to show the errors
See these topics
forum.virtuemart.net/index.php?topic=98988.0
forum.virtuemart.net/index.php?topic=98884.0
The error reported could be smth like:
Notice: Undefined index: comments in /home/wfdgfatfdies/public_html/ddsfsdf.com/administrator/components/com_virtuemart/models/orders.php on line 415
Catchable fatal error: Object of class JDate could not be converted to string in /home/wfdges/public_html/dsfsdfd.com/administrator/components/com_virtuemart/models/orders.php on line 997
A solution can be to use the VM2.0.0
administrator/components/com_virtuemart/models/orders.php
Let me know