Ah yes, I was using the XSLT 1.0 processor. I've changed that now to XSLT 2.0 but am still getting a similar (if less specific) error:

Expected token ')', found ','. On line 43:

Line 42:         using (StringWriter sw = new StringWriter())
Line 43:         {
Line 44:             BlogHotspot.Transform(xpathBlogXml, xslArg, sw);
Line 45:             litBlogHotspot.Text = sw.ToString();
Line 46:         }

	Martin Honnen
	http://msmvps.com/blogs/martin_honnen/