I had the same problem..
I solved it by searching this line in the postbit_legacy template:
Code:
<vb:if condition="$post['field2']"><dt>{vb:rawphrase location_perm}</dt> <dd>{vb:raw post.field2}</dd></vb:if>
then adding the following line after the one above:
Code:
<vb:if condition="$post['fieldXXX']"><dd>{vb:raw post.fieldXXX}</dd></vb:if>
At the profile field manager there is a field number in the cell called "name". You have to replace both XXX by the number of your custom profile field..