Ok, so this has been really frustrating… I created a custom menu and dragged and dropped my most used brushes, but when I start Z Brush my brushes do not load… some of them do… but most of them are missing… any solutions? I have tried saving them to zstartup/brushpresets folder, zdata/brushpresets folder, and of course saving my UI and or config. Thanks in advance.
Are you clicking on a .zpr file to open it? The UI is context sensitive, it can lead to ‘stuff missing’ if a tool isn’t in edit mode. 
Ok so I found a solution. Saving the UI to Users/Public/PublicDocuments/ZBrushData/ZStartup solved the problem. And I made sure that my brushes were saved to ZData/BrushPresets, because when I saved them to ZStartup/BrushPresets the brushes did not load, only the brushes that were living in the ZData/BrushPresets folder would load. So I moved them all to that folder and it works. Thanks anyways for the help!