According to your page source you have
Code:
<div class="smallfont">$vbphrase[gender]: $post[field5]
</div>
There is nothing I can suggest as the code which you are saying you have used is not the code which is being processed in your postbit, and the code that is being processed is being processed correctly with no errors.
It's probably linked to that other modification that you installed. You should UNINSTALL that as I have previously advised that it is not required for this modification.
I cannot support any problems arising from any other modifications being installed that may interfere with a modification. Therefore, I am afraid that I cannot provide any further support for your issue as the instructions provided do NOT cause your error and the code is simply not being processed in your postbit due to some other modification that you have installed.