diff -Nru pmwiki-2.1.26.orig/pmwiki.php pmwiki-2.1.26/pmwiki.php
--- pmwiki-2.1.26.orig/pmwiki.php	2006-11-04 10:56:15.000000000 +0100
+++ pmwiki-2.1.26/pmwiki.php	2006-11-04 10:55:42.000000000 +0100
@@ -1097,7 +1097,10 @@
   if ($t=='caption') return "<:table,1>$y";
   if (@$MarkupFrame[0]['cs'][0] != 'table') $rowcount = 0; else $rowcount++;
   $FmtV['$TableRowCount'] = $rowcount + 1;
-  $FmtV['$TableRowIndex'] = ($rowcount % $TableRowIndexMax) + 1;
+  if ($TableRowIndexMax > 0)
+    $FmtV['$TableRowIndex'] = ($rowcount % $TableRowIndexMax) + 1;
+  else
+    $FmtV['$TableRowIndex'] = $rowcount + 1;
   $trattr = FmtPageName($TableRowAttrFmt, '');
   return "<:table,1><tr $trattr>$y</tr>";
 }