You may be missing the images for the editor. If you have a custom style, you might need to copy images/editor to the images directory for your style (it looks like the editor images have changed in 4.1.8).
As for removing the rank, you probably just need to edit the template and either remove it or put in a conditional so it doen't show up in the profile, like maybe:
Code:
<vb:if condition="THIS_SCRIPT != 'member'">
// code for rank
</vb:if>