Some changes in 2.1 introduced a defect with calls to getTVDisplayFormat() from getTemplateVarOutput(). Here is the solution starting at line 1404 of /manager/includes/document.parser.class.inc.php -- simply replace line 1404; looks like this:
$output[$row['name']] = ($curDoc && $this->documentObject[$row['name']]) ? $this->documentObject[$row['name']] : getTVDisplayFormat($this,$row['name'],$row['value'],$row['display'],$row['display_params'],$row['type']);
with the following 5 lines:
$replace_richtext = "";
$richtexteditor = "";
$w = "100%";
$h = "300";
$output[$row['name']] = ($curDoc && $this->documentObject[$row['name']]) ? $this->documentObject[$row['name']] : getTVDisplayFormat($this,$row['name'],$row['value'],$row['display'],$row['display_params'],$row['type'],$replace_richtext,$richtexteditor,$w,$h);
MODX Staff