Error when using aggregate features in FetchXml

[Prospero100]

Running standard queries (list records matching search criteria) is working well, however when I try to run any fetchXml that contains an aggregate (count, max, etc) I get the error "FetchExpression cannot be converted because aggregates aren't supported by QueryExpression"

The odd thing is that I think this is being thrown before reaching the SqlVirtualDataEntityProvider or even attemping fetchXml to Sql conversion.

Do you know if SqlVirtualEntityProvider can support aggregate fetchXml queries?