I'm attempting to follow along with Hilary's walkthrough on the use of the RefreshSharePointListtems command (http://www.infopathdev.com/blogs/hilary/archive/2012/07/05/qrules-refreshsharepointlistitems-walkthrough-for-v4-2.aspx) but am having problems getting the owssrv.dll connection set up right. If I take the list GUID out of my known good mapping.xml (used for SubmittoSharePointList) and build my URL to http://server/site/subsite/_vti_bin/owssrv.dll?Cmd=Display&List={GUID}&XMLDATA=TRUE, I get a well formed but blank HTML document back. Changing the GUID throws an error, so it looks to be working, but I don't understand why I'm not getting any data back. Searching through StackOverflow and the like haven't turned up much. Any thoughts as to what the problem may be?
Environment: SP2010 on Windows Server 2008, client is IE10 and InfoPath 2010 on Win7.
David