Quote - too long, didn't read...(no offence intended)

 

I don't think anyone who makes content knowingly supports poser 4. Everything i've seen is p6 and above. If they say p4, they are too lazy to wiki if they have a quick question about "when was X feature added.

 

If you had read it, you would know that P6+ & DS4.5 both support .mc6s.  They say it (P6 compatibiltiy), but they don't actually know what it means.