Hello,
in V2.0.3b
I see in VirtueMartModelMedia constructor
$this->addvalidOrderingFieldName(array('ordering'));
$this->_selectedOrdering = 'ordering';
In some case (JOIN tables with ordering columns) this may cause
#1052 - Column 'ordering' in order clause is ambiguous.
_getOrdering mehod in VmModel class should be modified.
ORDER BY statement should be full