What PJB said
Also make sure that you have the BMs placed in the correct folder of your GOB/GOO file ([root]/UI/BM) I
think is the directory hierarchy, off the top of my head...).
Oh - just another thought - make sure (if they're custom BM icons that you name them appropriately in accordance to how the naming conventions work with items in the "items.dat" file; I think it's something like "ic<<next 5 digits of BM name here>>". The naming structure is detailed in the actual "items.dat" file, so you don't have to worry if you didn't understand what I just wrote - just follow their example
Hope this helps
-Jackpot
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