Large.fsh

please could anybody help about this error, i've tried to create my own large.fsh w/ full of crowds w/o vacant chairs and also w/ white jersey for playoff games but the problem is that when i've imported those bmp/dds file extension that i've used then i've checked it on my game then i've saw that the crowd disappeared. please help me about these problem, what file extensions i must use inorder to import/export files from large.fsh is it bmp,dds or png and if its dds waht kind of options? btw i've already tried the dds (AGRB 8888) and bmp but nothing happened. i'm working on these crowd because i've observed that bro beatboxer already created perfect crowd and i want also to try creating crowd but complete perfect crowds w/o vacant seats.