LogParser and ScatterMarkers Chart

I am hoping that I just overlooking something basic....

I am attempting to create a ScatterMarkers chart with the following statement:

logparser "SELECT time, time-taken INTO Scatter.png FROM *.log where cs-uri-stem='MyURL.htm" -o:chart -chartType:ScatterMarkers -chartTitle:"Scatter" -i:W3C

But I get the following error message:

"Charts of type 'ScatterMarkers' require series composed of 2 fields each"

If I dump the query into a CSV I get the data I want and can import into Excel and create the Scatter Chart, however, I want to do it all with logparser and cut out the 2nd step with Excel.

Any thoughts are appreciated.