A few days ago my Website stopped processing include declarations. Every page on the site provides at least one, often more, <$include virtual="etc"> tags that no longer operate. There is no error message such as one would encounter with IIS (e.g. Error processing SSI file) and the source continues to display the <$include virtual="etc"> tag intact. I have changed the virtual qualifier to file with no change. Keep in mind the site has been operational and trouble free for a number of years. The support staff at my ISP are, how can I put this?, unhelpful.
<body onload="P7_initTBM(1,2,1,1,200,3)" style="background-image:url(/img/homepage/maingradient.jpg); background-repeat:repeat-y">
<div id="container_masthead"><!--#include virtual="/masthead/masthead_menu.html" --></div>