[nerbert]

I don't know it this has been dealt with already. There's a bug in the helpful_answers template -- no third argument when you display good and bad ratings. Near the top change code to read as follows

<vb:if condition="$post['totalrank']">
	{vb:rawphrase helpfulanswer_x_out_of_y,{vb:raw post.goodrank},{vb:raw post.totalrank},{vb:raw post.badrank}}
</vb:if>

{vb:raw post.badrank} is missing from the argument list.