#4 xsi:type attribute error when remotely loading instance data

[fabiomina]

When instance data is loaded via HTTP (using
<xf:instance src=".." />) and there are typed
elements (using xsi:type attribute), the following
error appears:
"Schema undefined is undefined"

I tried also with the 'input' sample, putting the
instance data (<root>...</root>) in an external
inputdata.xml file, and leaving <xf:instance
src="inputdata.xml"/> in input.xform

Using a Javascript debugger I verified that, while
processing the instance element, the namespace
prefixes used in the type ('xsd' and 'types' in the
sample) have not been stored in the Schema.prefixes
property, while the schemas themselves have been
stored in Schema.all.