lxd_bruce, I think that problem is related with your mingw / gcc package, I don't remember exactly, but I had some problems like that when I modified my compiling environment and my .bat files.
I will be checking for a solution to your problem, I will try to recreate the same error to be able to help you
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Btw, KOF2112 , ThanX for those Icons packs
, I was gonna release a pack soon with them , because I noticed they are WAY better than MAMEUI icons
.
Oh, guys! Stay alert because a new Tool is coming related with MAME support files!, WIP pictures will come out soon! ^^
SeeYaa!