Preview Error for REST Web Service Source

When previewing a procedure that invokes a REST web service source, I get the following error:

select * from ( exec "ViewModel"."google"('toolbar','reciever') ) AS X_X

org.teiid.runtime.client.TeiidClientException: java.lang.RuntimeException: Remote org.teiid.core.TeiidProcessingException: TEIID30152 Failed to evaluate XQuery expression; Please check the query and correct errors in syntax or usage.

However, if I add the view procedure to a VDB and deploy, I am able to execute without error.

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