Minor bug - There is a table with a <td> but no surrounding <tr> tags in the html email that is sent to the customer confirming the order:
<div style="background-color: #e6e6e6;" width="100%">
<table style="margin: auto;" cellpadding="0" cellspacing="0" width="600" ><tr><td>
<table width="100%" border="0" cellpadding="0" cellspacing="0" class="html-email">
<td colspan="3">
<img src="http://#######/images/stories/virtuemart/vendor/logo.png">
<br/>
<strong>Hello Mrs Alison Smith,</strong><br/>
</td>
<tr>
<td colspan="2">
It still seems to work OK though!