[Ruatha]

It should unpack all files.
Try deleting the old .cmb file and see if it unpacks the new one.
Or enable download logs and check the download log for that game, it should say that it unpacks the .cmb file and where it puts the files.
I see no reason that it shouldn't unpack the .cmb file... (perhaps a bug?)

About the button, I'll make a hint for it.
If it finds a gam file but no .plr file it chooses "Unknown player". I fit finds a PBW turn but no files it chooses host.
I'll make it try to grab playernumber from PBW aswell instead of choosing host.