Custom UI Not Saving all buttons, or changing the buttons to a differnet icon.
…and again what happened to the WYSIWYG ZBC interface? < :b2: > 
For the top part of your image, see Marcus’ post here: http://www.zbrushcentral.com/zbc/showthread.php?t=49583
For the bottom part, I don’t know what interface item is to blame. I can’t tell from your picture. It kind of helps if you give the path name for the problematic interface element. 