got it...add the emgucv dll's from the examples bin folder into yer release folder then redo the publish then it works for XP...yay!
this stuff....OpenCV dll's (cv110.dll, cxcore110.dll etc) are in the same folder as your executable. If you download the SourceAndExample.ZIP file, copy everything from the bin folder to the folder of your executable.'
OHHHH..one more thing...ya gotta turn off signing on the clickonce manifests....then it werks a charm on XP...Phewww..
BUT IT WON'T RUN OUTSIDE THE DEBUGGER!!