>Have you tried calling Section.DeleteObject followed by Section.ImportSubreport (not the AddSubReportObject method)? According to the docs, that method allows you to specify the path of the report you wish to bring in. Then, once it's added you can mess around with the subreport's width and formatting etc.

OK, now I did try ImportSubreport--without calling DeleteObject first, just on a hunch--and I get the same "creation feature not enabled" message, indicating the runtime license is not installed. So we're back to square one.