Form no longer working after upgrade

I have a customized form with the following code which stopped working after the 1.6.2 upgrade. Does anyone know what needs to be changed before the upgrade so that my form doesn't go bust?

Here's the code:

<form method='post' enctype='multipart/form-data'  id='gform_1'  action='/wp-content/plugins/gravityforms/preview.php?id=1'>
	<id='gform_fields_1' >
		<id='field_1_1'>
			<br><label for='input_1_1'>Name</label>
				<input name='input_1' id='input_1_1' type='text' value='' tabindex='1'  />
		<id='field_1_2'>
			<br><label for='input_1_2'>Email</label>
				<input name='input_2' id='input_1_2' type='text' value='' tabindex='2'  />
		<id='field_1_5'>
			<br><label for='input_1_5'>Question</label>
				<textarea name='input_5' id='input_1_5' class='textarea small' tabindex='3' rows='10' cols='50'></textarea>
        			<input type='submit' id='gform_submit_button_1' class='button gform_button' value='Submit' tabindex='4' />
            <input type='hidden' class='gform_hidden' name='is_submit_1' value='1' />
            <input type='hidden' class='gform_hidden' name='gform_submit' value='1' />
            <input type='hidden' class='gform_hidden' name='gform_unique_id' value='********************' />
            <input type='hidden' class='gform_hidden' name='state_1' value='***********************' />
            <input type='hidden' class='gform_hidden' name='gform_target_page_number_1' id='gform_target_page_number_1' value='0' />
            <input type='hidden' class='gform_hidden' name='gform_source_page_number_1' id='gform_source_page_number_1' value='1' />
            <input type='hidden' name='gform_field_values' value='' />
        </div>
                </form>

Af

Yes, this form is on pelvicpainhelp.com. The guy who wrote it did a good job, but he's nowhere to be found now.