C4 and Bin files

I been playing a round making bin files for my missions. I just can't get C4 to see the bin files. The MED see them ok. I just can't under stand why C4 not seeing them.

Any Ideas

Are you naming the bin file the same as the map it goes with. Might check for any spaces in place of _ (underscore). I've made that mistake a time or two.

My Map name is Iceman5.bms
and my bin file is Iceman5.bin

Like I said the med is readying it, just fine. Its just when I go in to play the map