It will be a long time before this is fixed.
I don't know why DarkOrb insists on bringing out broken features, but this is another one of them. Due to the way the coding is done, the "Branding" feature requires a lot more work before it will work properly.
Best bet for now is to ignore it and change the file mentioned above by jmc67. You don't have to remove anything though, just re-arrange the Comment code.
Use Vi or Pico and change this file:
# /usr/local/cpanel/base/frontend/bluelagoon/stdheader.html
Change
<img src="<cpanel branding="image(cp)">">
<!--<img src="<cpanel printvar="dprefix">cp.gif">-->
To
<!-- <img src="<cpanel branding="image(cp)">"> -->
<img src="<cpanel printvar="dprefix">cp.gif">