Unfortunately yes, I can't see custom skins in rf2, have been trying to find out why for 2 years now, and despite help from peeps on these forums I am not able to fix it.
Recently I discovered that packing a .dds file into a mas file does show the custom skin.
Imagine my delight after all this time. not that I will be able to create my own skins...paint/pack/unpack/paint/pack...but at least I am able to add the excellent skins posted in this thread and from members.
Long story short: we starting a FR35 season and I would love to use my own skin, and others to see it during the season.
so question is, will that work with mas files as well?