Have you just started back riding with this bike after being off a bike for some time? There is something to be said for just letting your butt get used to it.

When I started back doing three and four rides of some distance per week, instead of the brief leisurely ride around the neighborhood one or two times a month, my butt got sore and pained too. I even went through the time honored process of changing saddles only to get temporary relief from each of them. Finally, after my butt, muscles and other stuff got into shape for the new demands I was making of them, then the pain went away and I found the saddle not to be that much different that the one I'd started with.

Even more recently the times over the winter I might not ride for a month or two and other times I've had to lay off from riding, I still get some butt pain when I start back. After a dozen rides in three or so weeks, it's all good again.