InfoPath Dev

As far as I can tell, the problem is that I am using a data element as the source for a combo box which is bound to an element which is _contained_in_ the hierarchy of the source element. e.g.: schema: <items> <item> <name/> <item-id/> <references> <reference-id/> ...

I am trying to use the ''Look up values in the form's data source'' feature of a Drop-Down List, but I always get the following error: InfoPath cannot create a new, blank form. The form template is not valid. InfoPath cannot open the following view: View 1 The following view file is not valid: view1.xsl The .xsl file is not ...